Question

cook uses terms of length 25 cm to lift a piece of burning coal of weight 2 N.If he applies the effor at the distance of 10 cm from the fulcrum find the effort

Answer 1

Answer:

L = 2N

E = ?

L. arm = (25 - 10)

           = 15 cm

E. arm = 10 cm

Explanation:

According to the principle of moments, in equilibrium:

L x L. arm = E x E. arm

2 x 15 = E x 10

∴ E = 3N

∴ The effort is 3N