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When a bicycle is in motion, the force of friction exerted
by the ground on the two wheels is such that it acts
a) In the backward direction on the front wheel and in the
forward direction on the rear wheel.
(b) In the forward direction on the front wheel and in the
backward direction on the rear wheel.
(c) In the backward direction on both the front and rear
wheels.
(d) In the backward direction on both the front and rear
wheels.
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Answer / girish
Consider a bicycle first. Pedaling the bicycle merely
rotates the back wheel in clockwise sense. The velocity of
point of contact is therefore backwards. Hence, friction
must act forward on the rear wheel.
This frictional force causes a translational acceleration
of the entire bicycle, including the front wheel. The
velocity of point of contact tends to develop in the
forward direction. So friction acts in the backward
direction.
Similar reasoning apply to a car, for the engine merely
rotates the backwheel
| Is This Answer Correct ? | 120 Yes | 20 No |
Answer / bhuwan kalra
(a) because when cycle is paddled its rear wheel moves in
forward direction but the point where wheel touches the
ground is in backward direction so friction will be in
forward direction in rear wheel but as the front wheel is
not getting any torque so it will be stationary and the
force that rotates it is only frictional force from ground.
so the friction will be in backward direction in front wheel
as only then front wheel will start rotating in the
rotational direction of rear wheal.
| Is This Answer Correct ? | 58 Yes | 8 No |
Answer / sp
option a) when we are pedaling the cycle
option c) when not being pedaled
| Is This Answer Correct ? | 24 Yes | 12 No |
Answer / akhilesh chaurasiya
Friction force act in forward direction because friction act in opposite to that direction of motion of wheel
| Is This Answer Correct ? | 0 Yes | 2 No |
Answer / harsh
A and c both are correct because there can be two cases 1 when the cycle is being paddled 2.when not paddled
| Is This Answer Correct ? | 1 Yes | 6 No |
Answer / sukesh
ans(d)
since any friction force which is acting upon the body will be opposite to the flow of object...so the same force is exerted on front and rear wheels of the cycle
| Is This Answer Correct ? | 7 Yes | 43 No |
Answer / cryolife
Force of friction exerted by the ground on the two wheels
acts in the backward direction on both the front and rear
wheels.
Ans is (d).
| Is This Answer Correct ? | 17 Yes | 71 No |
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