If the units of force, energy and velocity are 100 dyne, 400 erg and 10 cm/s respectively. Find the units of Mass, length and time.
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Answer:
Force =100dyne=M1L1T−2
velocity=10scm
=LT−1
Energy=500erg=M1L2T−2
⇒force energy
=L1
=100500
=5cm
⇒(velocity)2
energy
=M1
=(10)2500
=5gm
⇒T=0.5 sec
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