Circular motion

Front

What is circular motion?

Back

Circular motion is the motion of an object that travels along a circular path. It can be uniform (constant speed) or non-uniform (changing speed).

Front

What is the net force acting on an object in circular motion at the top of the loop?

Back

The net force is directed towards the center of the circle, which is downwards when at the top of the loop.

Front

True or False: An object in circular motion is constantly changing its velocity.

Back

True. Even if the speed is constant, the direction of the velocity vector is changing.

Front

What is the direction of velocity in circular motion?

Back

The velocity of an object in circular motion is always tangent to the circle at any point.

Front

What is centripetal force?

Back

Centripetal force is the net force that acts on an object moving in a circular path, directed towards the center of the circle.

Front

What happens to the speed of an object in circular motion if the radius increases while the centripetal force remains constant?

Back

The speed of the object increases as the radius increases, assuming constant centripetal force.

Front

What is the formula for centripetal acceleration?

Back

Centripetal acceleration (a_c) is given by the formula a_c = v^2 / r, where v is the linear speed and r is the radius of the circular path.

Front

What is the relationship between angular velocity and linear velocity in circular motion?

Back

Linear velocity (v) is related to angular velocity (ω) by the formula v = rω, where r is the radius.

Front

What is the effect of mass on centripetal force?

Back

Centripetal force increases with mass; it is directly proportional to the mass of the object moving in a circular path.

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.