Home
Class 11
PHYSICS
Total distance traveled by bike is 25m a...

Total distance traveled by bike is 25m and average speed is 10m/s. Then total time is taken to travel distance is

Text Solution

Verified by Experts

The correct Answer is:
C
If we take moment about the center than
`FxxR=Ialpha+fxxR`
`rarr F=2/5mRalpha+mumg`…….1
`Again F=ma_c-m mg`…….. 2
`-[because a_c=ralpha]`
`rarr a=((F+mumg))/m`
Putting the value of `a_c` in equation 1 we get
`=(2/5)(F+mug)/m+mu mg`
`rarr F=2/5F+2/5+2/5xx2/7xx0.5xx10+2.7xx0.5xx10`
`rarr (3F)/5=4/7+10/7=2`
`rarr F=((5x2))/3=10/3=3.3N`
Promotional Banner

Similar Questions

Explore conceptually related problems

The distance travelled by an object in a specified direction is

A ball is dropped from the roof of a tower height h . The total distance covered by it in the last second of its motion is equal to the distance covered by it in first three seconds. The value of h in metre is (g=10m//s^(2))

If distance travelled by particle is zero then its displacement is …... .

Two boats A and B are moving along perpendicular paths in a still lake at night. Boat A move with a speed of 3 m//s and boat B moves with a speed of 4 m//s in the direction such that they collide after sometime. At t=0 , the boats are 300 m apart. The ratio of distance of distance travelled by boat A to the distance travelled by boat B at the instant of collision is :-

A man travels half time of its journey with speed of 5m/s and for remaining half time he moves half of its total distance travelled, with speed of 3 m/s and remaining half distance with speed of 6 m/s. Find out the average speed of the man?

When a particle is undergoing motion, the diplacement of the particle has a magnitude that is equal to or smaller than the total distance travelled by the particle. In many cases the displacement of the particle may actually be zero, while the distance travelled by it is non-zero. Both these quantities, however depend on the frame of reference in which motion of the particle is being observed. Consider a particle which is projected in the earth's gravitational field, close to its surface, with a speed of 100sqrt(2) m//s , at an angle of 45^(@) with the horizontal in the eastward direction. Ignore air resistance and assume that the acceleration due to gravity is 10 m//s^(2) . There exists a frame (D) in which the distance travelled by the particle is minimum. This minimum distance is equal to :-

A body has to travel 120km distance. It travels first 30km with uniform speed 30km/hr. Its average speed is 60 km/hr. What should be its speed in next 90 km distance?

When a particle is undergoing motion, the diplacement of the particle has a magnitude that is equal to or smaller than the total distance travelled by the particle. In many cases the displacement of the particle may actually be zero, while the distance travelled by it is non-zero. Both these quantities, however depend on the frame of reference in which motion of the particle is being observed. Consider a particle which is projected in the earth's gravitational field, close to its surface, with a speed of 100sqrt(2) m//s , at an angle of 45^(@) with the horizontal in the eastward direction. Ignore air resistance and assume that the acceleration due to gravity is 10 m//s^(2) . " A third observer (C) close to the surface of the reports that particle is initially travelling at a speed of 100sqrt(2) m//s making on angle of 45^(@) with the horizontal, but its horizontal motion is northward". The third observer is moving in :-