How Much Force Is Needed to Push a Piano Up a Ramp?

[Edwardo_Elric]

Homework Statement

A man pushing a piano with a mass 160kg at constant velocity up a ramp that is inclined at 36.9 degrees above the horizontal. Neglect friction. If the force applied by the man is parallel to the incline, calculate the magnitude of this force.

Homework Equations

The Attempt at a Solution

summation of Fx = wsin(alpha) - Fman = 0
Fman = (160kg)(9.8)(sin(36.9))
= 941N

 

[marlon]

correct

marlon

 

[Edwardo_Elric]

ty for checking