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.
Promotional Banner

Topper's Solved these Questions

  • LAW OF MOTION

    NCERT GUJARATI|Exercise THINK AND DISCUSS|12 Videos

  • LAW OF MOTION

    NCERT GUJARATI|Exercise LET US IMPROVE OUR LEARNING (REFLECTIONS ON CONCEPTS )|3 Videos

  • HEAT

    NCERT GUJARATI|Exercise Multiple choice questions (Suggested Projects)|1 Videos

  • MOTION

    NCERT GUJARATI|Exercise THINK AND DISCUSS|14 Videos

Similar Questions

Explore conceptually related problems

A ball of mass m kept at the corner as shown in the figure, is acted by a horizontal force F. The correct free body diagram of ball is

A body of mass 2 kg is rest on a smooth horizontal surface . When a horizontal force of 0.5 N acts on this bofy it is displaced in the direction of the force . Find the work done by the force in 8.0 s .Show that this work is equal to the change in kinetic energy of the body .

A body of mass M is kept on a rough horizontal surface (friction coefficient = mu ). A person is trying to pull the body by applying a horizontal force but the body is not moving. The force by the surface on the body is,

The figure shows a horizontal force vecF acting on a block of mass M on an inclined plane (angle theta ). What is the normal reaction N on the block?

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.

A rectangular box lies on a rough inclined surface. The coefficient of friction between the surface and the box is mu . Let the mass of the box be m. (a) At what angle of inclination 0 of the plane to the horizontal will the box just start to slide down the plane ? (b) What is the force acting on the box down the plane, if the angle of inclination of the plane is increased to a gt theta (c) What is the force needed to be applied upwards along the plane to make the box either remain stationary or just move up with uniform speed ? (d) What is the force needed to be applied upwards along the plane to make the box move up the plane with acceleration a ?

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?

Two bodies of m asses 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 ?