Aim To investigate the effect of different masses suspended from a spring on the time period of the spring.
THE EFFECT OF A SUSPENDED MASS ON THE TIME PERIOD OF THE SPRING. Aim To investigate the effect of different masses suspended from a spring on the time period of the spring. Hypothesis I feel that if I increase the mass, the period will increase too because the mass is proportionate to the time period. Variables > Independent - Mass suspended from spring. > Dependent- The time period of the string. > Constant- The apparatus, Number of oscillations, spring constant (elasticity). Apparatus > 1 spring > 100 gram masses. (6 of them) Materials > 1 clamp stand > Stopwatch > Plasticine Method . Place a clamp stand on the table 2. Attach the spring to the clamp stand. 3. Add heavy books on the clamp stand to the base so that it is stable and doesn't affect our readings. 4. Add Plasticine to the top of the spring so that the spring itself doesn't vibrate a lot. Hence there would be no discrepancies in the readings. 5. Add 100 grams mass to the spring. 6. Displace the 100 gram mass. 7. Release the 100 gram mass and at the same time start the stopwatch. 8. Record the time taken for 10 oscillations. 9. Repeat steps 6 to 8 2 more times to get three total trials. 0. Now add more mass to the spring and repeat steps 6 to 8 with 200 g, 300g, 400g, and 500g. Diagram Raw Data Table Mass (grams) Time taken for 10 Oscillations (seconds)( +/- 0.01 secs) Trial
Is there a link between terminal velocity and weight?
Is there a link between terminal velocity and weight? Aim: In these experiments I aim to vary the weight of a paper helicopter that is dropped from a constant height to find out if there is a link between terminal velocity and weight. Prediction: I predict that if I increase the weight, then terminal velocity will increase. Before terminal velocity is reached, the weight is greater than drag (air resistance). The paper helicopter is accelerating because of unequal forces. As the helicopter increases in velocity, drag also increases. This is because air resistance is caused by air particles hitting an object repeatedly in the opposite direction to which it is moving. The faster the speed of the object's velocity, the harder the air molecules hit the object causing a greater air resistance. Therefore terminal velocity will be reached. This is when the forces are equal (shown in diagram). When terminal velocity is reached, there is no longer any acceleration because the forces are equal. Therefore the helicopter is at constant speed. So when the weight is increased, the acceleration of the helicopter will be faster. This means that when terminal velocity is reached, it will be at a higher constant speed than before. = Weight = Drag (air resistance) I think that if the weight (variable) is doubled, the terminal velocity will also double. I think this because if
How will changing the distance an elastic band is stretched effect the distance a plastic tub travels down a runway?
David Pasque How will changing the distance an elastic band is stretched effect the distance a plastic tub travels down a runway? Aim The aim of this experiment is to see how changing the distance an elastic band is stretched will effect how far a tub is catapulted down a runway. Plan In our experiment we plan to test how far we can catapult a plastic tub across a runway using an elastic band. We are going to get a runway and place it on a flat surface; at one end we will place a piece of wood horizontally across the width of the underside of the runway. The wood will have two nails in it on which the elastic band will be stretched around, this will come over the top of the runway to allow the elastic band to be pulled back and catapult a plastic tub along the runway. The equipment we will be using is: Runway, Plastic Tub, Length of wood with a nail in either end, Elastic band, Ruler, Pencil This is how we will lay out our experiment: The results we are going to collect are the distance the plastic tub travels. The variable we are going to alter in this experiment is the distance the elastic band is stretched backwards. This will change the force of the elastic band. We are going to change the distance of the elastic band being stretched 10 times, starting at 3cm, and finishing at 30cm, therefore a 3cm gap in between each. We will repeat this experiment 3 times,
To find out how increasing the height an object is dropped from, affects its average speed.
Adrianna Harold 10B1 01-05-02 Physics Coursework Aim: To find out how increasing the height an object is dropped from, affects its average speed. Prediction: I predict that the higher the object is dropped from the faster its average speed. This is because gravity pulls everything down and the higher an object is dropped from, the more time it has to accelerate until it reaches terminal velocity. V=ta+u (Where V = Final Velocity, T=Time, A= Acceleration and U= Initial velocity) In addition, the heavier an object, the longer the distance it has to travel before drag equals weight. This means the object will probably never reach terminal velocity. Plan: First I will collect the equipment and use a ball of plasticine to drop through air as a freefall. I will drop the ball from heights of 30cm, 40cm, 50cm, 60cm, 70cm, 80cm, 90cm and 1m. I will use a measuring stick to measure the heights from which to drop the plasticine. I will then drop the ball from each height and record the speed by timing how long it takes to reach the floor. . Collect equipment (see below) 2. Set up metre stick along table leg 3. Prepare and weigh plasticine balls, making sure they are spherical 4. Hold the ball with the bottom of the plasticine just above measurement 5. Drop the ball timing it with the stopwatch until the exact moment it hits the floor 6. Record results on a table
My aim is to find out whether mass affects the distance travelled by a margarine tub with the same force applied.
Science Investigation Aim My aim is to find out whether mass affects the distance travelled by a margarine tub with the same force applied. What I Will Do First of all I will set up the apparatus and have one person sitting on the stool to make sure it does not move. Ill then place the tub in front of the pulled back elastic band (15N) and let go of the tub, letting it move forward. I will then make a mark near the rulers with the chalk where the tub stopped and record my results in a table. Preliminary Experiment Results Weight (grams) Distance Travelled (centimetres) 00 14 200 82 300 46 400 32 When I performed the preliminary experiment, I found out that 100g differences between the weights does not give me a valid set of results. The difference between the distances travelled is large and if I plot a graph, the points would be too sparse to give an accurate graph. Factors that could affect the experiment Possible Affecting Factors Why It Affects How It Is Overcome Surface area of tub More friction with larger S.A Keep same tub Friction on the ground Will slow down tub Clean floor beforehand Different type of floor Less or more friction Stay on same floor Mass flying out of tub It will give inconclusive results Aim down slightly when releasing + use some tape Where mass is positioned inside the tub Force by elastic band may be absorbed
An Investigation into the factors that effect the acceleration of a falling object.
Stacey Goodwin SC1 An Investigation into the factors that effect the acceleration of a falling object Plan Aim: The aim of this experiment is to relate the height of a drop and the time it takes for a paper cake case to fall the distance of 4.4m down the drop. From my results, I can calculate the speed, the acceleration and also the value of the gravitational field strength. Theory: This experiment was first conducted in the 17th century by an Italian natural philosopher called Galileo. He believed that the speed of free falling objects increased in proportion to the time it took to fall (that they accelerated uniformly). He came up with this: Distance is directly proportional toTime2 This expression replaces the speed with the distance and the time. Both of these quantities can be measured. In the 17th Century, there wasn't the technology to measure the time it took for an object to fall freely, accurately. Preliminary Results: I did some preliminary work to find out suitable variables I could change during the experiment and also what I should keep constant. First of all I set up my equipment. I then took readings, including repeat readings, of various masses and surface areas. These are my preliminary results: Shape: Readings No. Scrunched Up Slit with scissors Flat .33
An Experiment to find out the effect of temperature on the height to which a squash ball bounces.
An Experiment to find out the effect of temperature on the height to which a squash ball bounces Planning This is an experiment to find out the effect of temperature on the height to which a squash ball bounces. A squash ball is made of rubber and is hollow. The height to which the ball bounces will depend on two variables, the initial height in which it is dropped, and the temperature of the ball. For this experiment the temperature of the ball is being examined therefore the height in which it is dropped will stay the same to keep it a fair test. The height will be 100cm. The ruler will be held up by a clamp stand so that it can be kept straight. To heat the ball, it will be put in a beaker of water, which has been heated by a kettle and the water will be left to cool, at every 10°C the ball will be dropped. When the water is at room temperature and will cool no more, ice will be added to cool the water to zero degrees. The range in which the measurements will be taking will be measured every 10 degrees. This is a good range and will allow 11 measurements to be taken (100°C - 0°C). The temperature will be measured in degrees Kelvin. The Kelvin scale begins at absolute zero and increases in degrees just like the Celsius scale. Absolute zero is the limit of how cold an object can become. 0°C becomes 273 Kelvin (273 K) and 100°C becomes 373 K. There are
How Weight Affects Friction.
Planning: The three factors that affect friction between surfaces are: Weight (Mass) Surface type (Roughness) Area of Contact I will investigate how weight affects friction. I will keep the other factors constant to make it a fair test. Trial Experiment I will choose the 100g masses. I will choose the 95g sled. I will take 5 numbers of readings. My range will be from 0g to 1kg. I will repeat each reading by 2 times. Reasons I chose to use the 100g masses because they are easy to read and covers the required range. I chose the 95g sled because the sled could hold more weight than the 31g sled, it is easier to read and easier to plot. I chose to take 5 numbers of readings because it fits with my range. I will go up by 200g for each reading. I chose to use my range from 0g to 1kg because it is easy to read. I will repeat each reading 3 times, I will repeat readings and take average so that it will be a fair test. Trial Results Mass of sled (g) Added Mass (g) Total Mass (g) Frictional Force (N) Reading 1 Reading2 1 Reading 3 Average Friction 95 200 295 0.2 0.2 0.2 0.2 31 200 231 0.1 0.1 0.1 0.1 Diagram Theory Friction is the force that opposes the motion of an object as it slides across a surface. As soon as you try to slide an object across a surface, friction acts upon it. To be able to
To Investigate a Single Factor that Affects the Speed of an Object at the End of a Runway
To Investigate a Single Factor that Affects the Speed of an Object at the End of a Runway Introduction As part of the physics GCSE coursework I have been asked to investigate a single factor that affects the speed of an object at the end of a runway. To do this I will measure how long it takes for trolley, ping-pong ball or marble to travel a set distance down a runway, which will be raised to different heights, which will be the variable. Aim: To investigate a single factor that affects the speed of an object at the end of a runway. Prediction I predict that the greater the height of the ramp the faster the speed of the object will be at the end of the ramp. Scientific knowledge tell us that this is because at the top of the ramp the ball or trolley has greater gravitational potential energy (gravitational potential energy is stored energy that can be converted into a different energy or "given out" if the object falls down), which is then converted to kinetic energy when the object starts to move. This is because energy cannot be used up or lost, it can only be converted into different energy. So the Kinetic energy must equal the gravitational energy as it is only converted, and therefore if the ramp is raised to a greater height the gravitational potential energy and kinetic energy will be higher, causing the speed of the object at the end of the ramp to be greater.
Investigating Impact Craters
PHYSICS INVESTIGATION INVESTIGATING IMPACT CRATERS The Aim of this investigation is to determine relationships between the following variables: * The height from which a ball (a simple model of an asteroid or meteor) is dropped and the diameter of its impact crater. * The height from which a ball is dropped and the depth of its impact crater. * The diameter of a ball and its impact crater. * The mass of a ball and the diameter of its impact crater. * The mass of a ball and the depth of its impact crater. * The angle at which the ball impacts and the length of its impact crater. * The angle at which a ball impacts and the depth of its impact crater. * Keeping the angle the same, changing the magnitude of the ball's velocity - and measure the length and depth of impact craters. * Changing the vertical height dropped by the ball, after being released at an angle. Preliminary Experiments In order to get the best range of results some preliminary work was required. Firstly the material which was to be dropped into needed to be decided upon. The three main options are as follows: . Flour This was initially intended as the impact material, however after some early tests it was found that the flour would not hold its shape correctly after the ball had been removed from the impact crater. This lead to the diameter of the craters being changed greatly from the expected
