1.

A body is thrown with a kinetic energy of 10j. If it attains a maximum height of 5m, find the mass of the body

Answer»

According to question


Kinetic ENERGY with which the body is thrown


KE = 10 j

While going up the energy Changes to potential energy

Thus


PE =  10 J

We know 

PE = m * g * H

10  =  m * 10 * 5

m = 10 / 50

m  =  0.2 Kg

Thus  MASS of body is o.2 Kg



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