elasticity

BITSAT 2015 Sample Questions › Mechanics questions › elasticity

when a metal wire elongates by hanging a load on it , the gravitational potential is decreased
then
a)this energy completely appears as increased kinetic energy of the block
b)this energy completely appears as incresed potential energy of wire
c) this energy completely appears as heat
d)none of these

#Physics #Mechanics

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9 Answers

1

prateek punj ·2009-04-29 08:02:48

i think (b).....

becoz potential energy = 1/2 stress*strain....

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vector ·2009-04-29 08:04:54

sry bt its nt rite ans

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prateek punj ·2009-04-29 08:05:36

kkkkkk i too thought the same....

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msp ·2009-04-29 08:25:32

the block will be in oscillations. so i thot d.

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vector ·2009-04-29 08:28:08

see ma basic doubt is wer d energy ll go

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ANKIT MAHATO ·2009-04-29 08:29:53

d

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vector ·2009-04-29 08:31:01

yup u r rigt plzz tell wer d energy wud go

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msp ·2009-04-29 08:33:28

some energy goes for the block as K.E and some as P.E of the spring and some of the remaining as dissipations such as heat,sound or any other means

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vector ·2009-04-29 09:27:44

r u sure

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Your Answer

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