Question

A wooden plank AB has a weight of 12 kgf. It balances a weight of 3 kgf is placed at A, which is 1.2 m away from the pivot. Determine the length of the wooden plank.
Ans - 3 m​

Answer 1

Answer:

1.6m

Explanation:

Torque 0f 40kg weight must be equal and opposite totorque of 30kg weight

Torque =force×arm length

40kg×g×1.2m=30kg×g×x

X=1.6m