Application of Force

Q.

Name two effects of force on a stationary body.

Q.

Electric field exert force on

1. charged or uncharged particles when they are in a state of rest or motion.

2. charged particles when they are in a state of motion.

3. charged particles when they are in a state of rest.

4. charged particles when they are in a state of rest or motion.

Q.

State the effect of the force:-

A spring is stretched

Q.

What can a force do to a body at rest?

Q. State two factors affecting the turning effects of a force.

Q. The moment of a force of $25N$ about a point is $2.5N.m$ find the perpendicular distance of force from that point .

Q. Define force.

Q. A particle is acted upon by a force of constant magnitude which is always perpendicular to the velocity of the particle, the motion of the particle takes place on a plane. It follows that

1. Its velocity is constant
2. It moves in a straight line
3. Its kinetic energy is constant
4. Its acceleration is constant

Q. If we put a ball a ball on the floor then why it does not move backward due to friction.