Home
Class 11
PHYSICS
A long chain of mass of mass M length L ...

A long chain of mass of mass `M` length `L` is being pulled with constant velocity on a rough incline with coefficient of friction `mu`. What rate frictional force on chain is increasing

A

`(3)/(10)mu(M)/(L)gv`

B

`(5)/(6)mu(M)/(L)gv`

C

zero

D

`mu(M)/(L)gv`

Text Solution

Verified by Experts

The correct Answer is:
A
In a small time let `dx` length crossing from lower incline to upper incline
`df=mu(M(dx))/(L)g cos 37^(@)-mu (M)/(L)dx cos 60^(@)`
`df=mu(M)/(L)g (cos 37-cos 60^(@))dx`
`(df)/(dt)=(muM)/(L)g((4)/(5)-(1)/(2))(dx)/(dt)=(3)/(10)(muM)/(L)gv`
Promotional Banner

Topper's Solved these Questions

  • FRICTION

    NARAYNA|Exercise Multiple answer question|20 Videos

  • FRICTION

    NARAYNA|Exercise Passage type of questions|6 Videos

  • COLLISION

    NARAYNA|Exercise Level-II (H.W)|54 Videos

  • GRAVITATION

    NARAYNA|Exercise EXERCISE -IV|40 Videos

Similar Questions

Explore conceptually related problems

A uniform chain of mass m and length I is kept on the table with a part of it overhanging (see figure). If the coefficient of friction between the table and the chain is 1//3 then find the maximum length of the chain that can overhang such that the chain remain in equilibrium.

A block of mass m moves with constant speed down the inclined plane of inclination theta . Find the coefficient of kinetic friction.

A body of mass m is placed on a rough surface with coefficient of friction mu inclined at theta . If the mass is in equilibrium , then

A metal block of mass m is placed on a smooth metallic plane in support with string as shown in diagram. If after long time due to corrosiom, the contact surface becomes rough with coefficient of friction mu , then friction force acting on the block will be :

A block of mass m is attached with a massless spring of force constant K. the block is placed over a rough inclined surface for which the coefficient of friction is mu =3/4 find the minimum value of M required to move the block up the place. (Neglect mass of string and pulley. Ignore friction in pulley). .

A uniform rope of total length l is at rest on a table with fraction f of its length hanging (see figure). If the coefficient of friction between the table and the chain is mu then

In the figure shown a ring of mass M and a block of mass m are in equilibrium. The string is light and pulley P does not offer any friction and coefficient of friction between pole and M is mu. The frictional force offered by the pole to M is