Question

Give the difference of contact force and non contact force. Write the names of different types of content force and non contact force. write SI unit of force and pressure.
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Answer 1

The forces which act on bodies when they are in physical contact. are called contact forces. For e.g. frictional force and force exerted on two bodies during a collision.

The forces experienced by bodies even without being physically touched are called the non-contact forces. For e.g. Gravitational force and Electrostatic force.

Contact force: (a) frictional force (b) normal reaction force (c) force of tension in a string

Non-contact force: (d) gravitational force (e) electric force (f) magnetic force

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Answer 2

Explanation:

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