Two blocks of mass 1 kg and mass 'm' is hanged over a pulle…

Physics Newton's Laws of Motion Coefficeint of Friction MCQ (Single Correct)

Two blocks of mass 1 kg and mass 'm' is hanged over a pulley of mass 'm'. Friction coefficient between pulley and string is 'µ' such that 2.

There cannot be any slipping between string and pulley howsoever small m is

If m' = 4 kg, there cannot be any slipping between string and pulley howsoever large m (> 1kg) is

If m' = 6 kg there will slipping between pulley and string if m = 8 kg

If m' = 6 kg there will be slipping between string and pulley if m <

Text Solution

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The correct answer is:

CHECK THE SOLUTION.

(b, c, d)

The string will not slip over pulley in clockwise direction till

≤ e μπ ⇒ ≤ 2 ... (i)

a =

By (i)

m ≤

String will not slip over pulley in anticlockwise direction till

≤ e μπ ⇒ ≤ 2

Proceeding as above,

m ≥

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