• Join over 1.2 million students every month
• Accelerate your learning by 29%
• Unlimited access from just £6.99 per month
Page
1. 1
1
2. 2
2
3. 3
3
4. 4
4

Centripetal motion experiment. Objective To study the relationship between the angular speed and the centripetal force and verify the expression of centripetal force.

Extracts from this document...

Introduction

School Name：  N.T. Heung Yee Kuk Yuen Long District Secondary School

Name：  Cho Chun Wa               Class No：  6C  (6)

Date：  21-10-09                       Subject：  AL Practical Physics

A4   Centripetal motion

Objective

To study the relationship between the angular speed and the centripetal force and verify the expression of centripetal force.

Apparatus

 Rubber bung Glass tub Nylon thread Paper clip Paper marker Stop-watch Metre ruler Slotted mas Electronic balance

Precautions and safety measures

• Wear safety spectacles and carry out the experiment in a large space so that the whirling rubber bung will not hit us easily.
• Use nylon spread, which is inextensible to lower the error.

Theory

To keep the body moving in a circle, the centripetal force is required. It is provided by the external resultant force towards the centre. To keep the radius unchange, the cantripetal force should alter the angular speed of the object.

Middle

Repeat the experiment(step1-4) by addind slotted masses to the hanger.

Results and discussion

The rubber bung cannot exactly circle in a horizontal plane because the vertical component has to balance the weight. If the this is exactly horizontal, the vertical component of the tension will be 0N.

The tension T and the weight should be theorectically the same. However, those in table 1 are not the same because of the experimental error. For example, the fan maybe turning on when performing the experiment. There is friction acting on the opening of the glass tube. And the rubber bung cannot be exactly whirled in constant speed and horizomtal plane. Besides, there maybe counting errors of the number of revolutions of the circular orbits made by the rubber bung.

Conclusion

lass="c4">21.6

20.6

21.0

0.700

8.97

1.42

0.122

1.22

22.2

23.2

23.2

22.9

0.763

8.23

1.20

0.102

1.02

25.2

24.8

24.6

24.9

0.830

7.57

1.01

0.0819

0.819

28.4

27.4

28.4

28.1

0.937

6.70

0.797

0.0617

0.617

30.6

31.2

31.2

31.0

1.03

6.10

0.658

Mass of the rubber bung (m) =    0.0221    kg

Length of the nylon thread (l ) =    0.800      m

Table 1

Figure b

Conclusion

From the experiment, we can conclude that the higher the angular speed, the higher the centripetal force. Also, the formula of cenntripetal force=mlω2 can be deduced.

This student written piece of work is one of many that can be found in our AS and A Level Fields & Forces section.

Found what you're looking for?

• Start learning 29% faster today
• 150,000+ documents available
• Just £6.99 a month

Not the one? Search for your essay title...
• Join over 1.2 million students every month
• Accelerate your learning by 29%
• Unlimited access from just £6.99 per month

Related AS and A Level Fields & Forces essays

1. Investigating the forces acting on a trolley on a ramp

5 star(s)

signal when the intensity of IR reaching it reaches a certain point. Without doing a complicated experiment, there is no way to determine at what level or intensity of IR the light gate will start or stop timing. Furthermore, because the experiment was done in a room which was lit

2. Experiment test for F = m2L by whirling a rubber bung (centripetal force)

The glass tube is held vertically and the rubber bung is whirled into a horizontal circle. 6. The angular velocity of the rubber bung ? was increased until the paper marker was at a constant position just below the bottom of the glass tube. As the diagram shown below.

1. Centripetal Force Experiment. Measure the centripetal force and compare it with the theorectical value ...

? / rad s-1 m?2L / N 1st Trial 2nd Trial Mean 0.750 0.1000 0.981 16.05 16.25 16.15 7.78 0.872 0.800 0.1200 1.18 13.17 13.22

2. What are the physical quantities that affect the value of centripetal force when a ...

due to gravity, and mw is the mass of the screw nuts. During this experiment, Fc = Fw.. The centripetal force is equal to the weight of the screw nuts. Procedure: 1. The mass of the rubber bund and screw is measured.

1. A1 Force of friction(TG)

from the graph. The slope of the straight line () = 0.26 10. Repeat steps 5 to 9 by replacing the wooden block with the bricks. Find the values of�s and�k for the bricks. Number of blocks 1 2 3 4 Applied force (F)

2. Force of friction

The applied force must be slight higher than the friction to produce acceleration. However, to keep a body moving, no net force is needed. The applied force was only to cancel the friction - kinetic friction. 4. Comparing the results of the blocks in pile and placed side by side

1. Investigating the relationship of projectile range and projectile motion using a ski jump.

As the projectile travels down the ramp it will be affected by air resistance and friction, however in this experiment we will ignore these factors. The point at which the projectile starts moving down the ramp, the gravitational potential energy converts into kinetic energy allowing it to accelerate off the ramp and into the air.

2. The Agricultural Revolution.

Enclosure began as well. This replaced the wasteful method of Crop Rotation and so many of the villagers had to move into towns and cities, as they couldn't afford to keep their land. In 1815 the "Corn Laws" were introduced.

• Over 160,000 pieces
of student written work
• Annotated by
experienced teachers
• Ideas and feedback to