Exploring Circular Motion Concepts

In a horizontal circular motion, what is the direction of the centripetal force?

• Tangential to the circle

• Outward from the centre of the circle

• Inward towards the centre of the circle

• Perpendicular to the plane of the circle

A car is moving around a circular track of radius 50 m at a constant speed of 20 m/s. What is the centripetal acceleration of the car?

• 4 m/s²

• 8 m/s²

• 6 m/s²

• 10 m/s²

Which of the following factors does not affect the magnitude of centripetal force required for circular motion?

• Mass of the object

• Speed of the object

• Radius of the circle

• Colour of the object

If the speed of an object in horizontal circular motion is doubled, how does the centripetal force change?

• It remains the same

• It doubles

• It quadruples

• It halves

What is the unit of centripetal acceleration in the International System of Units (SI)?

• m/s

• m/s²

• N

• kg

A 2 kg object is moving in a horizontal circle with a radius of 3 m at a speed of 4 m/s. What is the centripetal force acting on the object?

• 8 N

• 10.67 N

• 16 N

• 32 N

In a banked circular track, which force provides the necessary centripetal force for a car to move in a circle?

• Gravitational force

• Frictional force

• Normal force

• Tension force

What happens to the centripetal acceleration if the radius of the circle is halved while keeping the speed constant?

• It remains the same

• It doubles

• It halves

• It quadruples

Which of the following is true about the velocity of an object in uniform circular motion?

• It is constant in magnitude and direction

• It is constant in magnitude but changes direction

• It changes in magnitude but is constant in direction

• It changes in both magnitude and direction