Circular Motion Review

Front

What is the term for the motion of the moon around the Earth?

Back

Revolves

Front

What is the relationship between centripetal force and centripetal acceleration?

Back

Centripetal acceleration always points toward the center of an orbit, and centripetal force also points toward the center in the same exact location as the centripetal acceleration.

Front

What is the term for the spinning motion of Earth and the Moon on their axes?

Back

Rotate

Front

What happens to the path of a car on ice when it loses all frictional force?

Back

The car will follow a straight path in the direction it was moving before losing friction.

Front

If the period of a rotating object increases, what happens to the tangential velocity?

Back

The tangential velocity decreases, assuming all other factors stay the same.

Front

Define centripetal force.

Back

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

Front

What is centripetal acceleration?

Back

Centripetal acceleration is the acceleration that occurs in circular motion, directed toward the center of the circle.

Front

How does the speed of an object in circular motion relate to its radius and period?

Back

The speed of an object in circular motion is directly proportional to the radius and inversely proportional to the period.

Front

What is the formula for centripetal acceleration?

Back

Centripetal acceleration (a_c) = v^2 / r, where v is the tangential velocity and r is the radius of the circular path.

Front

What is the effect of increasing the radius of a circular path on the centripetal force required?

Back

Increasing the radius decreases the centripetal force required for a given speed.