State the energy changes that occur in a watch spring while it unwinds.

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Solution

A wound up watch spring has P.E. stored in it due to its wound up state. As the spring UNWINDS itself, the potential energy changes into KINETIC ENERGY with which it moves the arms of the watch.

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Similar questions

Energy can exist in several forms and may change from one form to another.For each of the following,state the energy changes that occur in:

(a) the unwinding of a watch spring,

(b) a loaded truck when started and set in motion,

(d) photosynthesis in green leaves,

(e) charging of a battery,

(f) respiration,

(g) burning of a match stick.

(h) explosion of crackers.

energy can exit in several forms and may change from one form to another .for each of the following. state the energy changes that occur in.

(a) the unwinding of a watch spring.

(B)A car goINg uphill.

Give the energy change in each of the folloeing cases:

(i) the unwinding of a watch spring

(ii) a loaded truck when started and set in motion

(iii) a car going uphill

Q1)“energy stored in a spring of watch” Comment on it

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