The diagram shows an object hanging from a string. Which of the following is the correct statement about the diagram?

Options

A. The object does not fall because there is no gravity.
B. The object does not fall because there is friction between the object and the string.
C. The object does not fall because a magnetic force is acting on it.
D. The object does not fall because the string is exerting a force against the earth's gravity.

Answer

D

Explanation

The object does not fall because the force S exerted by the string, balances the earth.s gravity and S net effect of the force on the object is zero.