Question

How much force will your need to move a 200 pound refrigerator onto a truck bed that is five feet high if you use a 10 foot inclined plane?

Answer 1

P = 100 lb

Step-by-step explanation:

For an ideal machine:

`Work\ In = Work\ Out\\(P)(L)=(W)(H)`

where,

P = Effort = Input Force = ?

L = Effort Arm = Length of inclined plane = 10 ft

W = Load to be lifted = 200 lb

H = Load Arm = Height = 5 ft

Therefore,

`P(10\ ft) = (200\ lb)(5\ ft)\\\\P = ((200\ lb)(5\ ft))/(10\ ft)`

P = 100 lb