ICSE Class 8 Physics Question 5 of 24

Force and Pressure — Question 7

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Question

Question 7

Find the area of a body which experiences a pressure of 50,000 Pa by a thrust of 100 N.

Answer

Given:
Pressure = 50,000 Pa
Thrust = 100 N
Area = ?

Pressure=ThrustAreaArea=ThrustPressure=10050000=0.002 m2\text{Pressure}= \dfrac{\text{Thrust}}{\text{Area}} \\[1em] \text{Area}= \dfrac{\text{Thrust}}{\text{Pressure}} \\[1em] = \dfrac{100}{50000} \\[1em] = 0.002 \text{ m}^{2}

So Area of body = 0.002 m2 or 2 x 10-3 m2.