General Knowledge - Physics - Discussion

If we roll any object from slope or from any were the rolling of the body is less compared to lifting the object so the this the correct answer.

Work done in rolling is less than lifting it up because the work done is force per distance of an object.
Here the force becomes directly proportional to the distance while in lifting the force becomes inversely proportional to distance because of potential energy possessed.

Definitely the correct option is D, if we thrown the stone vertically we lost more effort and the stone is directly return to the original position due to the gravity but when you thrown the stone incline there is no gravity and friction. So the work done in lifting is less than in rolling.

I think that if we lift this stone, we must effort a lot but if we roll it, we must effort a little. And so the work done is directly proportional to the effort.

I think work done in both cases are the same, if and only if the inclined surface is frictionless because the conservative force does not depend on the path of the object.

We all know that work done in lifting a stone vertically upward or rising a heavy object is never less than or equal to when pulled or pushed using a ramp or inclined plane why? Because when lifting it upward work is done against gravity while when using ramp.

Some of the force applied to push the stone overcome friction while the other force remaining is used to overcome the load but in the absence of friction the work done in raising the stone is equal to the work done using the inclined plane to pull the stone. Thanks for reading.

C is the correct answer. Work done is the same but the rate at which the work done is less in the slope.

Work in vertical lifting = m*g*H.

Work on sloping rode = F*L = m*g*sin(slope)*L = m*g*H.

So work is the same, but the force, F, is less = m*g*sin(slope).

May be because of force. Because on rolling as compared to lifting the required amount of force is less.

It is wrong.

Work done in both the cases is the same.

Because the work done is equal to the gain in potential energy and since they are being raised to the same height, the energy is same so the work in same. In case of rolling only the force required Is small but the work done is same.