Question

When a spring is stretched the consequential force which appears in its coil is:

• A. Force of friction
• B. Force of tension
• C. Force of gravity
• D. Both (a) and (b)

Answer 1

The correct option is B

Force of tension

The explanation for the correct option:

(B): Force of tension

1. A force that has the capability of increasing the length of a body is called “tensile force”.
2. When we stretch a spring, the consequential force of tension comes into action which increases the length of the spring.

The explanation for the incorrect options:

(A): Force of friction

1. The force which acts opposite to the direction of motion of a body is known as the force of friction.
2. In stretching a spring, there is no frictional force developed.

(C): Force of gravity

1. Force of gravity is due to the gravitational force between the earth and any body present on the surface of the earth.
2. There is no effect of the force of gravity on the stretching of a spring.

Hence, option (B) is correct.