STANDARD Physics Pressure MCQ Question
The two femurs each of cross-sectional area 10 cm² support the upper part of a human body of mass 40 kg. The average pressure sustained by the femurs is (Take g = 10 m s⁻²)
2 × 10³ N m⁻²
2 × 10⁴ N m⁻²
2 × 10⁵ N m⁻²
2 × 10⁶ N m⁻²
Correct Answer
Detailed Explanation
The total cross-sectional area of the femurs is 20 × 10⁻⁴ m². The force acting on them is 400 N. Therefore, the average pressure is 2 × 10⁵ N m⁻².
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