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Fig. 10.2 shows the tyre in contact with the road. road tyre Fig. 10.2 The area in contact with the road is 180 cm 2 . The tyre exerts a pressure of 20 N / cm 2 on the road. Calculate the force exerted by the tyre on the road. force = N
See it on the paper →The elephant stands with all four feet on the ground. The area of each foot in contact with the ground is 0.070 m 2 . The weight of the elephant is 36 000 N. Calculate the pressure exerted on the ground due to the elephant. pressure = N / m 2
See it on the paper →Fig. 9.1 shows two different car tyres. tyre X tyre Y Fig. 9.1 A car driver observes that her car sinks into soft ground when she uses tyres X. She changes the tyres on her car to Y, so that it does not sink into the soft ground. Explain why tyre Y will cause less pressure to be exerted on the ground than tyre X.
See it on the paper →State the name of the temperature scale used in the thermometer in Fig. 9.2.
See it on the paper →State the two physical properties that define the fixed points on this temperature scale.
See it on the paper →The canoe exerts a pressure of 0.5 kPa on the surface of the water. Calculate the area of canoe in contact with the surface of the water. The gravitational field strength, g, is 10 N / kg. area = m 2
See it on the paper →The glass block in Fig. 3.1 is resting on a bench. The glass block exerts a pressure on the bench. State the two variables that must be measured to determine the pressure exerted.
See it on the paper →Which statement about the bars is correct?
See it on the paper →Some candidates divided the area by the pressure, showing some confusion and resulting in incorrect answers. Those that knew the relationship successfully completed the calculation.
— Examiner report, May/June 2025, 0654/31 Q10(c)(ii) (Cambridge)
Most candidates used the correct formula to determine the pressure but some forgot to multiply the area by four to account for the number of feet that the elephant had.
— Examiner report, February/March 2025, 0654/32 Q11(a)(ii) (Cambridge)
Some candidates were able to explain that less pressure is exerted on the ground due to a greater surface area.
— Examiner report, February/March 2023, 0654/32 Q9(a) (Cambridge)
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