How much work would it take to push a # 2 kg # weight up a # 7 m # plane that is at an incline of # (5pi) / 12 #?

1 Answer
Aug 8, 2018

Answer:

The work is #=132.5J#

Explanation:

The work done is equal to the potential energy gained.

The potential energy is

#PE=mgh=mglsintheta#

The mass is #m=2kg#

The length of the plane is #l=7m#

The angle is #theta=5/12pi#

The acceleration due to gravity is #g=9.8ms^-2#

Therefore,

#W=2*9.8*7*sin(5/12pi)=132.5J#