A block is kept on a smooth inclined plane

Asked by admin @ 17/08/2021 in Physics viewed by 268 People

A block is kept on a smooth inclined plane of angle of incli-

nation @, which moves with a constant acceleration so that theblock does not slide relative to the inclined plane. If the inclinedplane stops, the normal contact force offered by the plane on theblock changes by a factor(a) [email protected] (b) [email protected] le) [email protected] (d) none of these

Answered by admin @ 17/08/2021

Answer:

$cos^{2} \theta$

Explanation:

Since the inclined place is smooth, there will be no friction force.

Assume the mass of the block = m

In the frame of reference of the inclined plane the forces acting on the block of mass m will be as shown in the figure attached.

Let the force on the block be F

The resolution of the forces as given in figure

Since the block does not slide

∴ Fcosθ = mgsinθ

or, F = mgsinθ/cosθ

N = mgcosθ + Fsinθ

= mgcosθ + (mgsinθ/cosθ)sinθ

= mg/cosθ

When the inclined plane stops, the force F will be zero

Hence, new Normal reaction = mgcosθ

This is greater than previous Normal Reaction by a factor = $cos^{2} \theta$

An object is kept on a smooth inclined plane

Asked by admin @ 16/08/2021 in Physics viewed by 279 persons

An object kept on a smooth inclined plane of inclination theta with horizontal can be kept stationary relative to the incline by giving a horizontal acceleration to the inclined plane, …

A body sliding on a smooth inclined plane

Asked by admin @ 31/08/2021 in Physics viewed by 282 persons

a body sliding on a smooth inclined plane requires 4second to reach the bottom after starting from rest at the top. how much time does it take to cover one …

A sphere is released on a smooth inclined plane

Asked by admin @ 20/08/2021 in Physics viewed by 306 persons

A sphere is released on a smooth inclined plane

A body is projected up a smooth inclined plane

Asked by admin @ 16/08/2021 in Physics viewed by 340 persons

A body is projected up a smooth inclined plane with velocity v from the pt A as shown. top is connected to well of diametrw 40m.if the body just manages …

A wooden block is placed on an inclined plane

Asked by admin @ 13/08/2021 in Physics viewed by 264 persons

a wooden block is placed on an inclined plane. the block just begins to slide down when the angle of the inclination is increased at 45degrees what is the coefficient …

A block has been placed on an inclined plane

Asked by admin @ 12/08/2021 in Math viewed by 267 persons

A block has been placed on an inclined plane. the slope angle θ of the plane is such that the block slides down the plane at a constant speed. the …

A block is kept on a frictionless inclined surface

Asked by admin @ 10/08/2021 in Physics viewed by 290 persons

A block is kept on a frictionless inclined plane of inclination alpha, it is given acceleration a to keep the block stationary, then a is equal to

An experiment to find coefficient of friction with inclined plane

Asked by admin @ 28/10/2021 in Physics viewed by 311 persons

You have devised an experiment to measure the kinetic coefficient of friction between a ramp and block. You place the block on the ramp at an angle high enough that …

A trolley while going down an inclined plane

Asked by admin @ 24/08/2021 in Physics viewed by 269 persons

A trolley, while going down an inclined plane, has an acceleration of 2 cm s-2. What will be its velocity 3 s after the start? NCERT Class IX Sciences - …