How much work would it take to push a # 5 kg # weight up a # 5 m # plane that is at an incline of # pi / 3 #?

1 Answer
Feb 25, 2017

Answer:

#245 Joules#

Explanation:

Work #= W = F*d*cos theta# with units of Joules

Force = mass x gravity = #5 kg * 9.8 m/s^2 = 49 (kg*m)/s^2 = 49 N#

Distance = #d = 5 m#

Since the force and the displacement is in the same direction (up the plane), #theta = 0; cos 0 = 1#

#W = 49 N * 5m = 245 N*m = 245 J#