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Applied Mechanics

Q1:

The velocity of a body fallen from height h, on reaching the ground is given by

A v = 2gh

B v = 2gh2

C v = 2gh

D v = 1/2gh

E h2/2g

ANS:C - v = 2gh

Law conservation of energy is applicable.

initial = final.

(PE)i + (KE)i = (PE)f + (KE)f.
mgh + ( 0) = (0)+ 1/2 mv^2.



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