Friction

Force

A push or pull that changes the state of the object on which it acts, caused by direct or indirect interaction between objects.

Effect of Force 1

Force can make a stationary object move, for example, pushing pedals of a bicycle to make the wheels turn.

Effect of Force 2

Force can increase or decrease the speed of a moving object, for example, applying force on bicycle pedals increases speed.

Effect of Force 3

Force can change the direction of a moving object, for example, a hockey player changes the direction of the ball with their stick.

Effect of Force 4

Force can change the shape of an object, for example, clay modeling.

Balanced Forces

Forces that are equal in magnitude but opposite in direction, such as applying equal forces in opposite directions on an object.

Unbalanced Forces

Forces that act on a body and cause a change in it, for example, lifting a heavy box requires unbalanced forces.

Resultant Force (Net Force)

The total amount of force acting on an object, along with its direction, calculated by summing forces acting in the same direction and subtracting those in the opposite direction.

Condition for Motion

When the net force is zero, the object does not move, indicating that the applied forces are balanced.