A block of mass of 2.0 kg kept at rest on an inclined plane of inclination 37^° is pulled up the plane by applying a costant force of 20 N parallel to the incline. The force acts for one second. (a) Show that the work done by the applied force does not exceed 40 J. (b) Find the workdone by the force of gravity in that one second if the work done by the applied force is 40 J. (c) Find the kinetic energy of the block at the instant the force ceases to act. Take g -10 m/s

Open in App

Solution

Suggest Corrections

Similar questions

Q. A block of mass

2.0 k g

at rest on an inclined plane of inclination

37^{\circ}

is pulled up the plane by applying a constant force of

20 N

parallel to the incline. The force acts for one seconds. (a) Show that the work done by the applied force does not exceed

40 J

. (b) Find the work done by the force of gravity in that one second if the work done by the applied force is

40 J

. (c) Find the kinetic energy of the block at the instant the force ceases to act. Take

g = 10 m / s^{2}

A block of mass 2.0 kg is pushed down an inclined place of inclination $37^{\circ}$ with a force of 20 N acting parallel to the incline. It is found that the block moves on the incline with an acceleration of 10 $m / s^{2}$ . If the block started from rest, find the work done (a) by the applied force in the first second, (b) by the weight of the block in the first second and (c) by the frictional force acting on the block in the first second. Take g= $10 m / s^{2}$ .

Q. A block of mass

2.0 k g

is pushed down an inclined plane of inclination

37^{o}

with a force of

20 N

acting parallel to the incline. It is found that the block moves on the incline with an acceleration of

10 m / s^{2}

. If the block started from rest, find the work done (a) by the applied force in the first second

A block of mass 2.0 kg is pushed down an inclined plane of inclination $37^{\circ}$ with a force of 20 N acting parallel to the incline. It is found that the block moves on the incline with an acceleration of $10 m / s^{2}$ . If the block started from rest, find the work done $(W_{F})$ by the applied force, work done $(W_{g})$ by the weight of the block and work done $(W_{f})$ by the frictional force acting on the block in the 1st second. Take $g = 10 m / s^{2}$ .

A block of ice mass 2.0 kg is pushed down an inclined plane of inclination $37^{\circ}$ with a force of 20 N acting parallel to the incline. It is found that the block moves on the incline with an acceleration of $10 m / s^{2}$ If the block started from rest, find the work done $(W_{f})$ by the applied force in the first second, $W_{g}$ by the weight of the block in the first second and $(W_{f})$ by the frictional force acting on the block in the first second. Take $g = 10 m / s^{2}$

Join BYJU'S Learning Program