Physics Quiz

Name :

When a body is in uniform circular motion, what is the direction of motion at a particular point ? (give the answer in a phrase or a short sentence)

Which of the following statements are true for a body in uniform circular motion ?

The direction of velocity changes constantly.

Speed and velocity are constant

The velocity is variable and the speed is constant

Centripetal force acts______ and centrifugal force acts_______.

Away from the centre, towards the centre

Towards the centre, away from the centre

A person A is standing on a merry-go-round. One end of a string is tied to the centre of the merry-go-round and the other end has a ball tied to it. The merry-go-round is rotating at a constant speed. Name the only real force that is acting in this scenario.

Which of the following are true?

Centrifugal and centripetal forces are not real forces.
Centrifugal force is a reaction force of centrifugal force
Centrifugal force is not a reaction force of centripetal force
Centrifugal force is a real force.

i,iv are true

i,iii are true

ii,iii are true

i,ii are true

Name the force/s required for circular motion.

Centripetal force

Centrifugal force

None of the above

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