• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

Physics - Motor Efficiency

Extracts from this document...

Introduction

Physics Coursework - Motor Efficiency

        In everyday life motors are used all around us, all of the time, in dishwashers, toy cars, or washing machines. So I thought it would be interesting to see how a motor reacts under varying conditions.

In this experiment a weight is suspended by a thread attached to the axle of a small motor. As the motor turns, the thread is wound around the axle to lift the weight. I will be investigating how the efficiency changes when the mass of the weight increases.

Variables:-

Voltage- The voltage applied to the motor.

Weight- The weight lifted by the motor.

Time- The time the motor is switched on.

The variable I have chosen to vary is the mass of the weight, I have chosen “weight”

...read more.

Middle

6.00

0.98

0.40

0.40

2.35

16.92

0.40

0.10

6.00

1.03

0.47

0.38

2.90

13.23

0.45

0.02

6.00

1.12

0.44

0.08

2.96

2.83

0.50

0.00

6.00

1.20

0.71

0.00

5.11

0.00

Results table 2:-

Mass (kg)

Height (m)

Voltage

Current (a)

time (s)

GPE (j)

...read more.

Conclusion

        From my graph there were no anomalous results which I obtained, this shows my results were accurate.  The method was suitable for the experiment conducted. It was a relatively simple experiment and did not involve any complicated apparatus or measurements. I would not change anything to do with the method because the results I obtained were accurate. The setup is very simple but effective for the type of experiment it was.

        My results were reliable and were the results which I predicted, from my results I can form a firm conclusion.

Conclusion-

As the load increases so does the efficiency of a motor, until a certain point, at this point the efficiency starts to decrease because the load is too great.

        To further this experiment I would investigate how voltage and time effect the efficiency of a motor.

...read more.

This student written piece of work is one of many that can be found in our GCSE Height and Weight of Pupils and other Mayfield High School investigations 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

See related essaysSee related essays

Related GCSE Height and Weight of Pupils and other Mayfield High School investigations essays

  1. GCSE Physics Coursework

    The formula for moment is: Moment= Force x Perpendicular distance from the pivot. The force in this investigation is weight. For example if I kept the weight at 4N but changed the distance from the pivot from 3cm to 4cm to 5cm.

  2. freezing point depression method

    + (0.15 to 0.25g X) from 0 - 150 seconds Time (sec) 180 210 240 270 300 330 360 390 420 450 480 Temperature (oC), Naphthalene 78 78 77 75 74 73 72 72 66 63 62 Temperature (oC), Naphthalene + (0.50 to 0.75g X)

  1. Bug Up Toy

    is always the same in each jump. - Chemical Energy > Elastic Potential Energy > Kinetic Energy > G.P.E. Then with all my formula and knowledge, I think the bug up will decrease as the mass increase because of the gravitational field strength of the earth is 10 N/g.

  2. See how the induced voltage changes when you pass a magnet through a coil ...

    I will use 5 different height and they will be 0, 10, 20, 30, and 40. I will take four readings for each height and take an average so it will be a fare test and I will get the most accurate results possible.

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