Give two examples of a couple's actions in our daily life.

State two examples of couple in every day life.

One Line Answer

For example, turning a key in a lock and turning a steering wheel.

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Chapter 1: Force - EXERCISE - 1 (A) [Page 10]

Chapter 1 Force
EXERCISE - 1 (A) | Q 19.3 | Page 10

Chapter 1 Forces: Turning Forces and Uniform Circular Motion
EXERCISE | Q 12. (d) | Page 11

An effort is applied on the bigger wheel of a gear having 32 teeth. It is used to turn a wheel of 8 teeth. Where it is used.

How does the effect of force differ when it is applied on a rigid body?

A spanner of length 10 cm is used to open a nut by applying a minimum force of 5.0 N. Calculate the moment of force required.

What are non-contact forces? Give two example

Write an expression for the change in momentum of a body of mass m moving with velocity v if v << c.

Classify the following amongst contact and non-contact forces.
Frictional force

Classify the following amongst contact and non-contact forces.
gravitation force

Define non-contact forces.

Clockwise moment produced by a force about a fulcrum is considered to be ______.