No force is required to move a body with consant velocity. Explain.

A plate of area 100 cm^2 is floating on oil of depth 2 mm. The coefficient of viscosity of oil is 15.5 poise. What horizontal force is required to move the plate horizontally with a velocity of 3 cm. s^-1 ?

A wagon is moving along a straight railway track with a velocity of 3.2 m cdot s^(-1) . The wagon is being loaded with coal in moving condition at a rate of 540 kg. min^(-1) . How much force is to be applied to move the wagon at a constant velocity?Assume, the initial velocity of the coal at horizontal direction is zero.

The power required to uplift a body of mass 120 kg with the velocity 4.5 m//s is______.

What force is required to generate a velocity of 36 km cdot h^(-1) in a body of mass 500 g. within a distance of 2 m?

To initiate an upward motion of a body along an inclined plane the minimum force required is twice the force required to keep the body at rest on the same incline . If the coefficient of friction is mu prove that the inclination of the plane is theta = tan^(-1) (3mu) .

Given the magnitude and direction of the net force acting on a car moving with a constant velocity of 30 km. h^(-1) on a rough road.

A block is placed on a horizontal surface. The block is pushed by applying a force F which acts at an angle of theta with the vertical. How much force will be required to move the block if frictional coefficient mu ? Discuss the fact if tan theta< mu .

A body is moving with uniform velocity —