• 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

# An experiment to find out how a number of pulleys effects the effort needed to lift a load of 1newton (100g)

Extracts from this document...

Introduction

Richard Aldridge 10 Gordon

An experiment to find out how a number of pulleys affect the effort needed to lift a load of 1newton (100g)

## Aim

To find out how a number of pulleys affect the effort needed to lift a load of 1 Newton (100g).

Hypothesis

I predict that as the number of pulleys we use increases, the effort needed to lift the pulley will decrease.

Fair test

There are many factors that could affect the results in this experiment all of which will have to be kept under control, if they were not kept under control then the results would not be fair. We will keep the test fair by keeping the load the same (1 Newton)

Middle

0.142

3

1

10g

0.5867

0.33

0.2567

Calculations

 Pulley number Friction in pulley system (N) (actual effort-theoretical effort) Mechanical advantage= Load (1N) /effort Energy output= Load (1N)Distance moved (m) Energy input=actual effort using counterbalance methodDistance effort rope pulled through

Conclusion

Evaluation

After competing this experiment it is possible to overlook some of the potential problems that may occur. The first problem was that the pulley itself was not very stable, this could also be due to a poor clamp, and often collapsed. Another problem that we occurred was that as the ropes passed each other they produced a lot of friction. This friction also occurred between the axel and the wheel, which made the experiment slightly more difficult than it, should have been.

This student written piece of work is one of many that can be found in our GCSE Forces and Motion 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 GCSE Forces and Motion essays

1. ## There is a very large packing case, far too heavy to lift, and I ...

Assume that the block is on the exactly horizontal table Assume that the block is on the horizontal ground, so the friction acting on the block would have the same magnitude as the horizontal component of the tension on the string.

2. ## In this experiment I aim to find out how the force and mass affect ...

When we noticed the trolley had hit the side, we decided to take the result anyway just to prove the point. Thankfully, we had arranged to collect a sensible amount of results, which gave us enough information to draw a conclusion from.

1. ## Mechanics - &amp;quot;loop the loop&amp;quot;

height and velocity I have just calculated are a minimum bound because to be completely certain that the roller coaster completes a loop it must still be in contact at point C at the top of the loop to ensure it does not fall off.

2. ## Problem - a very large packing case, far too heavy to lift, and I ...

So there is no friction force between pulley and string. 3. There is no air resistance. In such situation, the packing case would be actually moving very slowly, so the air resistance will be very small; and also it's very complicated to model the air resistance for this object.

1. ## My objective in this experiment is to find out how a spring varies in ...

Springs are used by us everywhere: in seats, mattresses, cars, toys, and all other sorts of necessary objects and items we encounter in our daily lives. They are normally made from metal, though they can come from plastics, rubber or even glass.

2. ## The aim of this experiment is to obtain the efficiency of a supplied catapult.

This will provide me with a value which I can then substitute into my equation for obtaining the efficiency of the catapult as it represents 'elastic energy transferred' which is the 'total energy transferred' in the original equation. The process of obtaining a value for kinetic energy is a more difficult and more time consuming procedure.

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