Circular Motion

Front

What is centripetal force?

Back

Centripetal force is the net force acting on an object moving in a circular path, directed towards the center of the circle, and is responsible for keeping the object in circular motion.

Front

What direction does centripetal force act in circular motion?

Back

Towards the center of the circular path.

Front

What does the velocity vector represent in circular motion?

Back

The velocity vector represents the direction and speed of an object moving along the circular path, which is always tangent to the circle.

Front

How is the velocity of an object in circular motion related to the circle?

Back

The velocity is always tangent to the line of the circle.

Front

What is the relationship between speed and centripetal force?

Back

The magnitude of centripetal force is equal to the square of the speed of the object divided by the radius of the circular path.

Front

Why does an object in uniform circular motion experience acceleration?

Back

Because it is changing direction, even if its speed remains constant.

Front

What is the formula for centripetal acceleration?

Back

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

Front

What is the difference between linear velocity and angular velocity?

Back

Linear velocity refers to the speed of an object along a circular path, while angular velocity refers to the rate of change of the angle with respect to time.

Front

What is the role of friction in circular motion?

Back

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

Front

What happens to the centripetal force if the radius of the circular path is doubled?

Back

If the radius is doubled, the centripetal force is halved, assuming the speed remains constant.