Home
Class 9
PHYSICS
A body of mass 'm' is kept on the horizo...

A body of mass 'm' is kept on the horizontal floor and it is pushed in the horizontal direction with a force of 10N continuously, so that it moves stadily.
(a) Draw FBD (a diagram showing all the foreces acting on the body aty a point of time)
(b) What is the value of friction ?

Text Solution

Verified by Experts


Given tht the body is moving steadily, Hence the net force on the body is zero both in horizontal and vertical directions. Forces acting on it along horizontal direction are force of friction (f), force of push (F)
We know the `f _(n et,x) =0`
`F + (-f) =0`
`F =f`
Hence the vlaue of force of friction is 10N.
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • LAW OF MOTION

    NCERT KANNAD|Exercise LET US IMPROVE OUR LEARNING (ALLPICATION OF CONEPTS )|5 Videos

  • LAW OF MOTION

    NCERT KANNAD|Exercise LET US IMPROVE OUR LEARNING (HIGHER ORDER THINKING QUESTIONS )|3 Videos

  • IS MATTER PURE?

    NCERT KANNAD|Exercise MULTIPLE CHOICE QUESTIONS|2 Videos

  • MATTER AROUND US

    NCERT KANNAD|Exercise Let us Improve our learning (Suggested project)|1 Videos

Similar Questions

Explore conceptually related problems

A body of mass 2 kg initially at rest moves under the action of an applied horizontal force of 7N on a table with coefficient of kinetic friction = 0.1 . Compute the Work done by the net force on the body in 10s.

A body of mass 2 kg initially at rest moves under the action of an applied horizontal force of 7N on a table with coefficient of kinetic friction = 0.1 . Compute the Work done by the applied force in 10s.

Knowledge Check

  • A body of weight 64 N' is pushed with justs enough force to start it move in across a horizontal floor and the same force continues to act afterwards. If the coefficients of static and dynamic friction are 0.6 and 0.4 respectively, the acceleration of the body will be (Acceleration due to gravity = g):

    A
    `(g)/(6.4)`
    B
    0.64 g
    C
    `(g)/(32)`
    D
    0.2 g.

  • A body slides down from rest along a smooth inclined plane making an angle of 45^(@) with the horizontal and takes time 'Y' to slide down the whole length of the plane. If the plane surface is rough the same body takes n.t time to slide down same length of the plane where n is a number greater than one. What is the value of coefficient of friction between the body and rough plane surface?

    A
    `mu=1-(1)/(n^(2))`
    B
    `mu=(1)/(n^(2))`
    C
    `mu=(n^(2))/(1)-l`
    D
    `mu=(l-(1)/(n^(2)))`

  • A body is under the action of a force 5 newton moves through 10 m in a straight line. If work done is 25 joule, what is the angle at which force acts with the direction of motion ?

    A
    Zero
    B
    `30^(@)`
    C
    `90^(@)`
    D
    `60^(@)`

    • Similar Questions

    Explore conceptually related problems

    A body of mass 0.40 kg moving initially with a constant speed of 10 m s^(-1) to the north is subject to a constant force of 8.0 N directed towards the south for 30 s. Take the instant the force is applied to be t = 0, the position of the body at that time to be x = 0, and predict its position at t = –5 s, 25 s, 100 s.

    Two bodies of masses 10 kg and 20 kg respectively kept on a smooth, horizontal surface are tied to the ends of a light string. A horizontal force F = 600 N is applied to (i) A, (ii) B along the direction of string. What is the tension in the string in each case?

    A body of mass 2 kg initially at rest moves under the action of an applied horizontal force of 7N on a table with coefficient of kinetic friction = 0.1 . Compute the Change in kinetic energy of the body in 10s.

    A body of mass 5 kg, initially at rest, moves under the action of an applied force of 15N on a horizontal surface with a coefficient of friction 0.25. Calculate (a) Work done by the force (b) Work done by friction (c ) Work done by net force (d) Change in kinetic energy in 5s.

    A Rough inclined plane with inclination 30^(@) with the horizontal has a block of 1 kg being pushed up the plane by a force of 10 N acting parallel to the plane. If the coefficient of friction between the block and the plane is 0.1 and block is pushed through a distance of 10 m along then incline. What are the increases in the (1) potential energy and (ii) kinetic energy of the block ?

    Home
    Profile