Physics Worksheet - Annual Examinations For Secondary Schools, 2013 Page 10
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10(b)
In 1851 Richard Dudgeon invented the hydraulic jack. The diagram below shows how
the hydraulic jack is applied to lift a car. The hydraulic fluid transmits pressure caused
by piston A.
2
(i)
Calculate the pressure caused by a force of 1000 N on piston A of area 0.01 m
.
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(2)
(ii)
What is the pressure at each of the four pistons holding the car? Explain your answer.
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(2)
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(iii) Calculate the force on each piston of area 0.02 m
.
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(2)
(iv) Calculate the total upward force provided by the hydraulic lift on the car.
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(2)
(v)
The weight of the car is 7000 N. Is the hydraulic lift able to lift the car ? Explain.
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(2)
Physics – Secondary Schools – Track 3 – Form 3 – 2013
Page 10 of 10
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