SUBMITTED BY:-ARYA.RREG NO : 13971007

PHYSICAL SCIENCE

A force is an influence which tends to set

a stationary body in motion or which

tends to change the speed and direction

of a moving body or which tends to

change the shape of a body.

Contact force

Non-contact force

Balanced force

Unbalanced force

A force that can be applied only when it

is in contact with an object is called a

contact force.

Examples: muscular force, frictional

force.

A force that can be applied without any

contact between two bodies is called non-

contact force.

Examples: magnetic force, gravitational

force.

When a number of forces act on a body,

and the resultant of these forces is zero,

then the forces are said to be balanced.

When a number of forces act on a body,

and the resultant of forces is not zero,

then the forces are said to be unbalanced.

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