Questions in Work, Energy and Power

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A uniform chain of length 2m is kept on a table such that a length of 60cm hangs freely from the edge of the table. The total mass of the chain is 4kg. What is the work done in pulling the entire chain on the table
A particle is acted upon by a force of constant magnitude which is always perpendicular to the velocity of the particle, the motion of the particle takes place in a plane. It follows that
A ball of mass m moves with speed v and strikes a wall having infinite mass and it returns with same speed then the work done by the ball on the wall is
A force $\vec F = (5\hat i + 3\hat j + 2\hat k)N$ is applied over a particle which displaces it from its origin to the point $\vec r = (2\hat i - \hat j)m$. The work done on the particle in joules is
The kinetic energy acquired by a body of mass m is travelling some distance s, starting from rest under the actions of a constant force, is directly proportional to
If a force $\vec F = 4\hat i + 5\hat j$ causes a displacement $\vec s = 3\hat i + 6\hat k$, work done is
A man starts walking from a point on the surface of earth (assumed smooth) and reaches diagonally opposite point. What is the work done by him
It is easier to draw up a wooden block along an inclined plane than to haul it vertically, principally because
Two bodies of masses 1 kg and 5 kg are dropped gently from the top of a tower. At a point 20 cm from the ground, both the bodies will have the same
Due to a force of $(6\hat i + 2\hat j)N$ the displacement of a body is $(3\hat i - \hat j)m$, then the work done is

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