A spherical ball of mass 2 kg falls from a height of 10 m and is brought to rest after penetrating 10 cm into sand. The average force exerted by sand on the ball is N.

Physics · Work, Power & Energy

JEE Main 2026 — 2 April, Evening Shift — Question 9

A spherical ball of mass $2\mathrm{kg}$ falls from a height of $10\mathrm{m}$ and is brought to rest after penetrating $10\mathrm{cm}$ into sand. The average force exerted by sand on the ball is N.

Option A:
1980
Option B:
2020
Correct
Option C:
2000
Option D:
1000

Answer: B

Step-by-step solution

Work-energy: $mg(10+0.1) - F_{sand}\times0.1 = 0$ → $F_{sand}=2\times10.1\times100=2020\mathrm{N}$

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Exam: JEE Main 2026
Paper: 2 April, Evening Shift
Subject: Physics
Chapter: Work, Power & Energy
Topic: Applications of Conservation of Mechanical Energy