Quelpr
2 marksHydrostatics

CSEC Physics · 1990 · Paper 2 · Question 2(b)(iii)

Figure 4 shows a hydraulic machine used for lifting cars.

A force of 480 N is applied to piston A of area 0.01 m^2. What is the resulting pressure on the liquid?

This question uses a figure or table from the paper — you'll see it when you practise.

The mark scheme is shown once you've answered.

Practise this question

Other parts of this question

  1. 2(a)(i)Give the formula for calculating the efficiency of the engine.[2 marks]
  2. 2(a)(ii)A car uses gasolene of energy content 40 MJ per litre. If its engine is 30% efficient, how much useful work does it do for every litre of gasolene consumed?[2 marks]
  3. 2(a)(iii)The car travels at constant speed against an average retarding force of 1200 N. How far can the car travel on 1 litre of gas?[3 marks]
  4. 2(b)(i)State the principle on which the action of this machine is based.[2 marks]
  5. 2(b)(ii)Explain how the principle is applied to obtain a force great enough to support a car.[2 marks]
  6. 2(b)(iv)What is the pressure on the large piston?[1 mark]
  7. 2(b)(v)What is the total force exerted on the large piston if its area is 0.15 m^2?[2 marks]

More practice: the rest of this paper · more Hydrostatics questions · all CSEC Physics past papers