Home
Class 11
PHYSICS
A block of mass 2 kg is pulled through 3...

A block of mass 2 kg is pulled through 3 m by a constnat horizontal force of 10N, along a frictionless horizontal table. What is the work doen by (i) the applied force and (ii) the gravitational force?

A

20N,60N

B

30N,15N

C

30N,zero

D

10n,5N

Text Solution

Verified by Experts

The correct Answer is:
C
Work done by the gravitational force is given by
`W = mgh =` loss in P.E. `= 10 xx 9.8 xx10 = 980 J`
Promotional Banner

Topper's Solved these Questions

  • FORCE, WORK AND TORQUE

    MARVEL PUBLICATION|Exercise TEST YOUR GRASP|10 Videos

  • FRICTIONAL IN SOLIDS AND LIQUIDS

    MARVEL PUBLICATION|Exercise TEST YOUR GRASP|10 Videos

Similar Questions

Explore conceptually related problems

A block of mass 2.5 kg is pushed 2.20 m along a frictionless horizontal table by a constant force 16 N directed 45^@ above the horizontal. Determine the work done by. (a) the applied force, (b) the mormal force exerted by the table, (c) the force of gravity and (d) determine the total work done on the block.

A 10 kg block is pulled along a frictionless surface in the form of an arc of a circle of radius 10 m . The applied force is 200 N . Find the work done by (a) applied force and (b) gravitational force in displacing through an angle 60^@ . .

A block of mass m is pulled slowly by a minimum constant force on a rough ( mu ) horizontal surface through a distance x. Find work done by force F.

A block of mass 1kg is pressed against a wall by applying a horizontal force of 10N on the block. If the coefficient of friction between the block and the wall is 0.5 ,magnitude of the frictional force acting on the block is

Two blocks of masses 2 kg and 4 kg are in close contact on a frictionless horizontal table. A horizontal force of 18 N is applied to the larger mass. What is the force at the surface of contact between the blocks?

A block of mass 4 kg is resting on a horizontal table and a force of 10 N is applied on it in the horizontal direction. The coefficient of kinetic friction between the block and the table is 0.1. The work done in sqrt(20) s

A block of mass 100 kg is set into motion on a frictionless horizontal surface with the help of a frictionless pulley and rope system shown in What horizontal force should be applied on the rope to produce an acceleration of 0.1 m//s^(2) .

A horizontal force of 4 N is applied to a block of mass 2 kg resting on a frictionless table. What is the acceleration of the block in ms^(-2) ?

A block of mass M is pulled along a horizontal frictionless surface by a rope of mass m as shown in A horizontal force F is applied to one end of the rope. Find (a) the acceleration of the rope and block (b) the force that the rope exerts on the block (c) the tension in the rope at its mid point