- #1
tjohn101
- 93
- 0
Homework Statement
A 260 kg piano slides 4.3 m down a 30° incline and is kept from accelerating by a man who is pushing back on it parallel to the incline (Fig. 6-36). The effective coefficient of kinetic friction is 0.40.
Figure 6-36
(a) Calculate the force exerted by the man.
391.3469084 N
(b) Calculate the work done by the man on the piano.
-1682.791706 J
(c) Calculate the work done by the friction force.
-3795.408294 J
(d) What is the work done by the force of gravity?
? J
(e) What is the net work done on the piano?
? J
Homework Equations
Work=Force*Distance
gravity=9.8
Fnet=Sum of all forces
The Attempt at a Solution
Letters a through c are correct, but I have not been able to solve for d and e. I have tried doing W=FX for letter d, but with no luck. I cannot solve for e without solving for d.
Any help is appreciated. Thank you!