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.
Answers were Sorted based on User's Feedback
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 |
How many bonds are present in CO2 molecule?
what is Glycomics?
How long will a train 100m long traveling at 72kmph take to overtake another train 200m long traveling at 54kmph?
In the next two or three years what will the important advances in the field be?
it is a common experience that if we go on burping simultaneously and consciously(i.e.purposely,as in a non- natural action),our stomach starts aching.Why does this happen?
Define toxicogenomics?
When X-Ray photons collide with electrons (a) They slow down (b) Their mass increases (c) Their wave length increases (d) Their energy decreases.
If the sum of n terms of two series of A.P are in the ratio 5n+4:9n+6 .find the ratio of their 13th terms?
An electron emits energy (a) Because its in orbit (b) When it jumps from one energy level to another (c) Electrons are attracted towards the nucleus (d) The electrostatic force is insufficient to hold the electrons in orbits.
Which of the following is not an essential condition for interference (a) The two interfering waves must be propagated in almost the same direction or the two interfering waves must intersect at a very small angle (b) The waves must have the same time period and wavelength (c) Amplitude of the two waves should be the same (d) The interfering beams of light must originate from the same source.
What is the largest DNA sequence comparison achieved on PatternHunter?
How many base pairs does the simplest bacteria have?