A 50 kg man with 20 kg load on his head climbs up 20 steps

Last updated: 6/24/2023

A 50 kg man with 20 kg load on his head climbs up 20 steps of 0 25 m height each Then the work done against gravity in climbing is take g 10 m s 2 350 J 1 5 J 3 100 J 4 3500 J If any how speed of light in vacuum becomes 1 5 times its initial speed then new value of light year