Question

What is the minimum value of the mass `M` so that the block is lifted off the table at the instant shown in the diagram ? Assume that the blocks are initially at rest.
.
A. `(m)/(sin 60^@)`
B. `(m)/(tan 60^@)`
C. `m sin 60^@`
D. none of these

Answer 1

Correct Answer - D
The accelerations of the blocks along the string are equal , now apply `F = ma` for both the blocks.