Home Physics Newton's Laws of Motion All Topic Question for Revision Test Two blocks of masses and are connected to …
Physics Newton's Laws of Motion All Topic Question for Revision Test MCQ (Single Correct)

Two blocks of masses and are connected to each other by a massless string and spring of force constant k as shown in the figure. The spring passes over a frictionless pulley connected rigidly to the edge of a stationary block A. The coefficient of friction between block M and the plane horizontal surface of A is . The block M slides over the horizontal top surface of A and block m slides vertically downwards with the same speed. The mass M is equal to

A
B

C
D

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The correct answer is:
A

When the system of two blocks of masses M and m is either at rest or moving with the same

speed, no net force acts on them.

In this equilibrium state,

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