Question

A lead block is suspended from your hand by a string. The reaction due to the force of gravity on the block is the force exerted by :

• A. The string on the block
• B. The block on the string
• C. The string on the hand
• D. The block on Earth

Answer 1

The correct option is D The block on Earth

By law of Gravitation, If the Earth pulls the body with gravitational force F, body pulls the Earth with same force F.

So, reaction of force on block due to the Earth is force on Earth due to the block.