Circular Motion and Gravitation Quiz

Which term describes the force that acts on an object moving in a circular path, directed towards the center of the circle?

• Centrifugal force

• Centripetal force

• Rotational motion

• Gravitational constant

What is the apparent outward force experienced by an object in circular motion, though it's not a real force but a result of inertia?

• Gravitational force

• Frictional force

• Centripetal force

• Centrifugal force

What is the direction of the centripetal force in circular motion?

• Outward from the center

• Tangent to the path

• Inward towards the center

• Parallel to the velocity

In circular motion, how is the object's velocity oriented in relation to the centripetal force?

• Parallel to the centripetal force

• Perpendicular to the centripetal force

• Opposite to the centripetal force

• At a 45-degree angle to the centripetal force

A ball on a string is traveling in circular motion.
Select the hotspot that shows the direction of the ball's velocity if the string snaps.

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A 5kg object is moving in a circular path with an acceleration of 8 m/s². What is the centripetal force needed to keep the object in motion?

• 40 N

• 3 N

• 1.6 N

• 0.625 N

A Formula 1 racing car turns around a circular curve with a radius of 30 m at a speed of 50 m/s. What is the centripetal acceleration of the car as it rounds the turn?

• 83 m/s^2

• 1.7 m/s^2

• 0.6 m/s^2

• 18 m/s^2

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In circular motion, what must the net force be?

• Gravitational force

• Frictional force

• Centripetal force

• Magnetic force

In the context of a roller coaster car at the bottom of a loop, what does the normal force F_n act towards?

• The circle's center

• The ground

• The start of the coaster

• The car itself

A ball on a string swings in a circle. Which force statement describes the tension force at the bottom of the vertical circle?

• Ft = Fg

• Ft = ma

• Ft = ma - Fg

• Ft = ma + Fg

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