Friction on Bicycle Wheels

Q. When a bicycle is in motion (after pedalling is stopped), the force of friction exerted by the ground on the two wheels is such that it acts

1. In the backward direction on the front wheel and in the forward direction on the rear wheel
2. In the forward direction on the front wheel and in the backward direction on the rear wheel
3. In the backward direction on both front and the rear wheels
4. In the forward direction on both front and the rear wheels

Q. When you are pedalling a bicycle, the frictional force exerted by the ground acts on the front wheel and on the rear wheel.

1. backward
2. forward
3. forward
4. backward

Q. When a bicycle is in motion (after pedalling is stopped), the force of friction exerted by the ground on the two wheels is such that it acts

1. In the backward direction on the front wheel and in the forward direction on the rear wheel
2. In the forward direction on the front wheel and in the backward direction on the rear wheel
3. In the backward direction on both front and the rear wheels
4. In the forward direction on both front and the rear wheels

Q.

Whenyou are pedalling a bicycle, the force of friction exerted
by the ground on the two wheels is such that it acts

1. In the backward direction on the front wheel and in the
   forward direction on the rear wheel.

2. In the forward direction on the front wheel and in the
   backward direction on the rear wheel.

3. In the backward direction on both the front and rear
   wheels.

4. In the backward direction on both the front and rear
   wheels.

Q. Consider a vehicle going on a horizontal road towards east. Neglect any force by the air. The frictional forces on the vehicle by the road.

1. must be towards east
2. must be towards west
3. is towards east if the vehicle is accelerating
4. is zero if the vehicle is moving with a uniform velocity

Q. For pure rolling to occur,

1. There should be no tangential force acting on the body at the point of contact
2. There should be a tangential force acting on the body at the point of contact
3. There should be no normal force acting on the body at the point of contact
4. net torque should be zero

Q.

Whenyou are pedalling a bicycle, the force of friction exerted
by the ground on the two wheels is such that it acts

1. In the backward direction on the front wheel and in the
   forward direction on the rear wheel.

2. In the forward direction on the front wheel and in the
   backward direction on the rear wheel.

3. In the backward direction on both the front and rear
   wheels.

4. In the backward direction on both the front and rear
   wheels.

Q. Assertion :Friction is necessary for a body to roll on the surface. Reason: Friction provides the necessary tangential force and torque.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
3. Assertion is correct but Reason is incorrect
4. Both Assertion and Reason are incorrect

Q.

Whenyou are pedalling a bicycle, the force of friction exerted
by the ground on the two wheels is such that it acts

1. In the backward direction on the front wheel and in the
   forward direction on the rear wheel.

2. In the forward direction on the front wheel and in the
   backward direction on the rear wheel.

3. In the backward direction on both the front and rear
   wheels.

4. In the backward direction on both the front and rear
   wheels.

Q. Why is it easier to roll a gas cylinder than to pull it along the road?

Q. Which of the following is the function of ball bearing?

1. To increase friction
2. To convert static friction into kinetic friction
3. To convert kinetic friction into rolling friction
4. None of these

Q. Differentiate between Motion and force of friction.

Q. Though friction opposes relative motion, yet in certain cases, friction is also the cause of motion. In fact, without friction, motion cannot be started, stopped or transferred from one body to the other.

Read the above passage and answer the following questions:

Give the direction of friction on front wheel and rear wheel of a bicycle when it is pedalled and when pedalling is stopped.

Q. When a bicycle is in motion (after pedalling is stopped), the force of friction exerted by the ground on the two wheels is such that it acts

1. In the backward direction on the front wheel and in the forward direction on the rear wheel
2. In the forward direction on the front wheel and in the backward direction on the rear wheel
3. In the backward direction on both front and the rear wheels
4. In the forward direction on both front and the rear wheels

Q. How does friction act for a lizard on the ceiling?

Q. To determine when to change the tyre of the vehicle due to wear & tear, path length is required.

1. True
2. False

Q. When you are pedalling a bicycle, the frictional force exerted by the ground acts on the front wheel and on the rear wheel.

1. backward
2. forward
3. forward
4. backward

Q. When we move we kind of push our foot backwards which makes the friction to act in forward direction and gives us a forward push and visa versa . So in a way the backward motion our foot helps the forward motion while the forward motion of our foot kind of helps us go back or stop as friction acts in the backward direction.
Is this how we move !!

Q. To determine when to change the tyre of the vehicle due to wear & tear, path length is required.

1. True
2. False