Question

what are the works of power which affect the mass?

Answer 1

`\text{Power}=12.635\ kW`

Explanation:

The power `P` of work on the block of mass `m=1400\ kg` moving with a constant velocity `v=1\ m/s` up the plane inclined at an angle `\theta=\tan^{-1}(3/4)` is given as

`P=\text{total force acting on the block down the plane}\times \text{velocity}`

`P=(mg\sin\theta+\mu mg\cos\theta) v`

`=mg(\sin\theta+mu\cos\theta)v`

`=(1400)(9.81)(3/5+(0.4) 4/5)\cdot 1`

`=12635.28 \ W`

`=12.635\ kW`