Qstnid -Ii-10-when A Metal Wire Elongates By Hanging A Load On It, The Gravitational Potential Energy Is Decreased. - 14: Some Mechanical Properties Of Matter - Neet-xii-physics

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NEET-XII-Physics

14: Some Mechanical Properties of Matter

with Solutions - page 3

Qstn# ii-10 Prvs-Qstn Next-Qstn

#10
When a metal wire elongates by hanging a load on it, the gravitational potential energy is decreased.
(a) This energy completely appears as the increased kinetic energy of the block.
(b) This energy completely appears as the increased elastic potential energy of the wire
(c) This energy completely appears as heat.
(d) None of these.
digAnsr: d
Ans : (d)
None of these is the correct option. The decreased gravitational potential energy transforms partly as elastic energy, partly as kinetic energy and also in the form of dissipated heat energy.
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