Physics Concepts: Centripetal and Centrifugal Forces

What is an example of circular motion?

• A book resting on a table

• A car moving in a straight line

• A plane flying in a straight path

• A man running on a circular track

What happens to a mass in circular motion if the string breaks?

• It continues in circular motion

• It moves in a zigzag path

• It moves in a straight line

• It stops immediately

Which of the following is a property of centripetal force?

• It acts towards the center

• It acts away from the center

• It acts parallel to the center

• It acts perpendicular to the center

What is the formula for centripetal force?

• F = ma

• F = mv^2/r

• F = mr^2/v

• F = mvr

What does centripetal acceleration depend on?

• The color of the object

• The speed of the object

• The mass of the object

• The shape of the object

In which direction does centripetal acceleration act?

• Towards the center

• Parallel to the center

• Perpendicular to the center

• Away from the center

What is the nature of centrifugal force?

• It is a real force

• It is an apparent force

• It is a gravitational force

• It is a magnetic force

What provides the necessary centripetal force for a car on a curved road?

• The car's engine

• The friction between the tires and the road

• The car's weight

• The air resistance

What happens to a passenger in a car when it takes a sharp turn?

• They feel no force

• They feel a force towards the center

• They feel a force upwards

• They feel a force away from the center

What is the role of friction in circular motion of a car?

• It acts as a centrifugal force

• It increases the car's weight

• It provides the necessary centripetal force

• It reduces the speed of the car