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← JEE Main 2022 · 25 Jun · Shift 1
PhysicsInteger+4 / -1Question 51 of 90

JEE Main 2022 · 25 Jun · Shift 1, Physics question 51

A uniform chain of 6 m length is placed on a table such that a part of its length is hanging over the edge of the table. The system is at rest. The co-efficient of static friction between the chain and the surface of the table is 0.5, the maximum length of the chain hanging from the table is ______ m.

Answer and worked solution

Official answer: 2

Limiting friction. The hanging weight equals μ\mu times the weight on the table: l=0.5(6−l)l=0.5(6-l).

Solve. 1.5l=31.5l=3, l=2l=2 m.

Answer: 2

Topics:Friction