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17 Questions

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Forces and Torque on a Moving Car

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Questions and Answers

What is the main function of static friction between the road and the tyres of a vehicle?

To facilitate smooth turning

To reduce the weight of the vehicle

To prevent outward slipping or skidding (correct)

To increase the speed of the vehicle

In the context of a vehicle turning, what force can potentially cause the vehicle to topple?

Normal reaction force

Weight force

Centrifugal force (correct)

Frictional force

What is a critical requirement for a two-wheeler rider to avoid toppling while turning?

Inclining with respect to the vertical (correct)

Leaning away from the turn

Decreasing the speed

Increasing the speed

Why is the friction between the road and the tyres of a vehicle referred to as 'static' friction?

Because it is constant regardless of motion (B) Signup and view all the answers

When a vehicle topples while turning, which wheels are most likely to leave contact with the ground first?

Front wheels (C) Signup and view all the answers

What factor should be considered when loading a vehicle to prevent easy toppling while turning?

Balancing weight distribution on all wheels (B) Signup and view all the answers

What is the force responsible for the circular motion in this scenario?

Centripetal force (C) Signup and view all the answers

What is the relationship between centrifugal force and the resultant forces towards the centre?

Centrifugal force is greater than the resultant forces towards the centre. (C) Signup and view all the answers

What is the nature of centrifugal force in this scenario?

Non-real force (B) Signup and view all the answers

In terms of angular acceleration, what effect does a component perpendicular to the axis have?

Changes direction of angular acceleration (A) Signup and view all the answers

What is always perpendicular to the plane of rotation in this scenario?

Axis of rotation (A) Signup and view all the answers

When a merry-go-round reaches uniform speed, what happens to centrifugal force?

It exactly balances out the resultant of all real forces (B) Signup and view all the answers

What is the significance of a banking angle of 90 degrees on a road surface?

It imposes a lower limit on the turning speed. (A) Signup and view all the answers

In the context of a banked road, what is the role of static friction?

To prevent downward slipping. (D) Signup and view all the answers

What is the relation between the force of static friction and the normal reaction in a turning scenario?

The force of static friction is less than or equal to the normal reaction. (D) Signup and view all the answers

What is the primary role of the normal reaction in balancing forces during turning?

To provide centripetal force. (D) Signup and view all the answers

How does the coefficient of static friction impact the turning speed on a banked road?

It has no effect on the turning speed. (C) Signup and view all the answers