Question

Which one is an example of contact force?

• A. A magnet pulling bits of iron
• B. A stone projected vertically upward
• C. A rickshaw puller pulling a rickshaw
• D. A charged body attracting piece of paper

Answer 1

The correct option is C

A rickshaw puller pulling a rickshaw

The explanation for the correct option:

C: A rickshaw puller pulling a rickshaw

1. Contact force: The force which acts on a body directly or through a connector, are called contact forces.
2. A rickshaw puller pulling a rickshaw - physical contact between person and rickshaw.

The explanation for the incorrect option:

A: A magnet pulling bits of iron

1. A magnet pulling bits of iron - magnet attracts magnetic materials kept at a distance.

B: A stone projected vertically upward

1. A stone projected vertically upward - Stone is going vertically upwards without any connector.

D: A charged body attracting a piece of paper

1. A charged body attracting a piece of paper- Due to electrostatic force piece of the paper is attracted by scale.

Hence, the correct option: (C): A rickshaw puller pulling a rickshaw