Home
Class 11
PHYSICS
In the track shown in figure section AB ...

In the track shown in figure section `AB` is a quadrant of a circle of `1` meter radius. A block is released at `A` and slides without friction until it reaches `B`. After B it moves on a rough horizontal floor and comes to rest at distance `3` meters from B. What is the coefficient of friction between floor and body?

A

`1//3`

B

`2//3`

C

`1//4`

D

`3//8`

Text Solution

Verified by Experts

The correct Answer is:
A
`mgxx1=(1)/(2)m u^(2)rArru^(2)=2g ....(1)`
`v^(2)=u^(2)+2asrArr0=2g=2a(3)`
`rArra=(g)/(3)rArr :' mu_(k)g=a`
`:. mu_(k)g=(g)/(3):. u_(k)=(1)/(3)`
Promotional Banner

Topper's Solved these Questions

  • DAILY PRACTICE PROBLEMS

    RESONANCE|Exercise dpp 38|5 Videos

  • DAILY PRACTICE PROBLEMS

    RESONANCE|Exercise dpp 39|3 Videos

  • DAILY PRACTICE PROBLEMS

    RESONANCE|Exercise dpp 36|5 Videos

  • CURRENT ELECTRICITY

    RESONANCE|Exercise Exercise|54 Videos

  • ELASTICITY AND VISCOCITY

    RESONANCE|Exercise Advanced Level Problems|9 Videos

Similar Questions

Explore conceptually related problems

In the track shown in figure section AB is a quandrant of a circle of 1 metre redius. A block is released at A and slides without friction until it reaches B . After B it moves on a rought horizontal floor and comes to rest at distance 3 meters from B. What is the coefficient of friction between floor and body?

In the track shown in figure -3.94 section AB is a quadant of a circle of 1 metre radius in vertical plane. A block is released at A and slides without friction until it reaches at B. After B it moves on a rough horizontal floor and comes to rest at D, 3 metres from B the coefficient of friction between floor and the body will be :

A block is released at A and slides on smooth surface in shape of quarter circel. The horizontal part is rough if the block comes to rest 1.0 m away from B, then what is the coefficient of kinetic friction?

A block slides with a velocity of 10 m/s on a rough horizontal surface. It comes to rest after covering a distance of 50 metre. If g is 10m//s^(2) , then the coefficient of dynamic friction between the block and the surface is

A block of mass m is released on the top of a smooth inclined plane of length x and inclination theta as shown in figure. Horizontal surface is rough. If block comes to rest after moving a distabce d on the horizontal surface, then coefficient of friction between block and surface is :-

A body freely released from A slides down a smooth inclined plane 'AB' and then a rough incline plane 'BC' such that BC = N (AB). If the block comes to rest at C, then coefficient of kinetic friction between the block and inclined plane is?

A body is moving along a rough horizontal surface with an initial velocity 6m/s m If the body comes to rest after travelling 9 m , then the coefficient of sliding friction will be

A ball of mass m is attached to a cord of length L , pivoted at point O , as shown in Fig. The ball is released from rest at point A, swings down and makes an inelastic collision with a block of mass 2m kept on a rough horizontal floor. The coefficient of restitution of collision is e = 2//3 and coefficient of friction between block and surface is After collision, the ball comes momentarily to rest at C when cord makes an angle of theta with the vertical and block moves a distance of 3L//2 on rough horizontal floor before stopping. The values of mu and theta are, respectively,

In figure shown minimum mass of block B ( at a particular angle between horizontal and string AP ) to just slide the block A on rough horizontal surface is (m)/(2) as shown in figure. If mu is the coefficient of friction between block A and ground then (p)/(mu^(2)) will be :