Question

If 500 g be the unit of mass, 50 s the unit of time & acceleration due to gravity (980 cms) be the unit
of acceleration, find what will be the new unit of energy ?​

Answer 1

Explanation:

✔Energy is proportional to mv2 and v = gt

✔So E is proportional to m (gt)2

1 J = Kg [(m/s2)(s)]2

✔= 2 X 500 g [(9800 m/s2/ 9800) x (50s/50)]2

✔= 2 x 500g [1/9800 x 50]2 [9800 m/s2 ]2 (50s)2

 ✔= 2 x (1/490000)2 [500 g][9800 m/s2 ]2 [50s]2

✔= 2 / 240100000000 new unit

✔1 J  = 2 / 240100000000  new unit

✔New unit of energy  =  240100000000/2  J 

⭐= 120050000000 J

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