Question

Climbing out of bed is sometimes hard in the morning. If you have a mass of 60 kg, what is the minimum amount of work in joules you have to do to get out of bed? Assume your center of mass when lying in your bed is 0.75 m above the floor, and your center of mass when standing is 1.25 m above the floor.

Answer 1

you have to lift your center of mass 0.5m and using formula mgh(assuming your kinetic energy is not change) 60*9.8*0.5=....