Centripetal Force

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

How does centripetal force change with velocity?

Back

Centripetal force increases with the square of the velocity. If velocity is tripled, the centripetal force increases by a factor of 9.

Front

What is the formula for centripetal force?

Back

Front

If the radius of a circle is doubled, how does the centripetal force change if speed remains constant?

Back

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

Front

Calculate the centripetal force for a 0.2 kg yoyo spun at 3 m/s in a circle of radius 0.7 m.

Back

The centripetal force is 2.57 N.

Front

What happens to the centripetal force if the speed is doubled?

Back

If the speed is doubled, the centripetal force increases by a factor of 4.

Front

What is the centripetal force acting on a 900-kg car moving at 10 m/s around a circle with a radius of 25 m?

Back

The centripetal force is 3600 N.

Front

If an object moves in a circle with a net force of 5.0 N, what is the required force if the speed is doubled?

Back

The required force is 20.0 N.

Front

What is the relationship between mass and centripetal force?

Back

Centripetal force is directly proportional to the mass of the object; as mass increases, centripetal force increases.

Front

What is the effect of increasing the radius on centripetal force, assuming constant speed?

Back

Increasing the radius decreases the centripetal force, assuming speed remains constant.