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ICSE Class 10 Answered

A catapult throws a stone of mass 100 gram with a velocity of 30 m per second find the potential energy of its elastic band if 25% of energy is wasted
Asked by Samrat | 30 Jun, 2018, 11:36: PM
answered-by-expert Expert Answer
75% of potential energy U stored in elastic band is used to get kinetic energy.
 
0.75×U = (1/2)×m×v2  = (1/2)×100×10-3 ×30×30
 
from the above eqn. we get U = 60 J
Answered by Thiyagarajan K | 01 Jul, 2018, 01:43: PM

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