Uniform circular motion

Front

What is centripetal force?

Back

Centripetal force is the net force directed towards the center of a circular path that keeps an object moving in that path.

Front

What is the direction of centripetal acceleration in uniform circular motion?

Back

Centripetal acceleration is directed towards the center of the circular path.

Front

How is centripetal acceleration calculated?

Back

Centripetal acceleration (a_c) is calculated using the formula: a_c = v²/r, where v is the tangential speed and r is the radius of the circular path.

Front

What happens to the speed and velocity of an object in uniform circular motion?

Back

In uniform circular motion, the speed remains constant, but the velocity changes due to the continuous change in direction.

Front

What is the formula for tangential speed in circular motion?

Back

Tangential speed (v) can be calculated using the formula: v = 2πr/T, where r is the radius and T is the period of rotation.

Front

What is the relationship between centripetal force and mass?

Back

Centripetal force (F_c) is directly proportional to the mass (m) of the object and its centripetal acceleration (a_c): F_c = m * a_c.

Front

What is the effect of increasing the radius on centripetal acceleration?

Back

Increasing the radius while keeping speed constant decreases the centripetal acceleration, as a_c = v²/r.

Front

What is the role of friction in uniform circular motion?

Back

Friction provides the necessary centripetal force to keep an object moving in a circular path, preventing it from sliding outward.

Front

How does the period of rotation affect tangential speed?

Back

A shorter period of rotation results in a higher tangential speed, as v = 2πr/T.

Front

What is the significance of the term 'uniform' in uniform circular motion?

Back

The term 'uniform' indicates that the speed of the object remains constant throughout the motion.