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Two blocks of masses m(1) and m(2) are c...

Two blocks of masses `m_(1)` and `m_(2)` are connected through a massless inextensible string .A block of mass `m_(1)` is placed at the fixed rigid inclined surface while the block of mass `m_(2)` hanging at the other end of the string which is passing through a fixed massless frictionless pulley shown in figure The coefficient of static friction between the block and the inclined plane is `0.8` The system of masses `m_(1)` and `m_(2)` released from rest

A

The tension in the string is `20 N` after releasing the system

B

The contact force by the inclined surface on the block in along normal to the inclined surface

C

The magnitude of contact force by the inclined surface on the `m_(1)` is `20 sqrt(3) N`

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
a,b,c
Here `m_(1)g sin 30^(@) = m_(2)g = 20 N` so there is so tendency motion in any direction
Hence , there is no friction on `m_(1)` contact force will be only normal force
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