The potential energy of a freely falling object decreases progressively. Does this violate the law of conservation of energy? Why?

(a) have same velocities at any instant

The object is in motion, so its energy = kinetic energy = 1 /2 mv2  The kinetic energy of the object, when it comes to rest = 0.  Work done on object...

When a freely falling body eventually stops on reaching the ground, its kinetic energy gets converted into heat energy (as the body and ground become warm due to collision), sound...

(a)(i) According to the law of conservation of energy, energy can neither be created nor be destroyed but can be transformed from one form to another. Here, the increase in...

(a) Potential energy, P.E. is the energy possessed by a body of mass, m after reaching a height, h. it is given by, P.E. = mgh  (b) The capacity to do...

Decrease in P.E. = Increase in K.E. So there is no loss in the energy by the object. There is only the transformation of the energy.

(d) (i), (ii) and (iv)

The correct answer is (d) 20 cm. Explanation:  The rise in a capillary tube is given as h = 2S.cosθ/rρg When the entire arrangement is in a freely falling elevator, the effective...

The correct answer is (4) Explanation:  The rise in a capillary tube is given as h = 2S.cosθ/rρg When the entire arrangement is in a freely falling elevator, the effective g =...

(a) increases