Question

fus abon / 2 of the purling force on the block is on then find the static friction on the brock a​

Answer 1

Answer:

Correct option is

C

120 N

As the both the masses are in equilibrium the static friction will be acting on blocks which can be found from balancing the forces in vertical direction.

The FBD of block A

Writing force balance in vertical direction for block A

f

1

= weight of the block A =20 N

Writing force balance in vertical direction for block B

f

2

−f

1

= weight of the block B 100 N

The value of frictional force between wall and block B is 120 N

Explanation:

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