A boy pull a nail from the wall with a string tied to the nail.the string os inclined at an angle of 60° to the wall if the tension in the string is 4N, what is the effective when in pulling the nail

Answer 1

To find the effective force in pulling the nail, we need to resolve the tension force into its components.

The tension force in the string can be split into two components: the vertical component and the horizontal component.

The vertical component of the tension force can be found using the equation:

Vertical component = Tension force x sin(angle)

Vertical component = 4N x sin(60°) = 4N x 0.866 ≈ 3.464N

The horizontal component of the tension force can be found using the equation:

Horizontal component = Tension force x cos(angle)

Horizontal component = 4N x cos(60°) = 4N x 0.5 = 2N

To pull the nail out of the wall, the effective force required is equal to the horizontal component of the tension force, which is 2N.