A 128 carton is pulled up a frictionless baggage ramp inclined at 30.0 above the

Question

A 128 carton is pulled up a frictionless baggage ramp inclined at 30.0 above the horizontal by a rope exerting a 72.0 pull parallel to the ramp's surface. If the carton travels 5.20 along the surfaA 128 carton is pulled up a frictionless baggage ramp inclined at 30.0 above the horizontal by a rope exerting a 72.0 pull parallel to the ramp's surface. If the carton travels 5.20 along the surface of the ramp, calculate the work done on it by the rope, gravity, and the normal force of the ramp.ce of the ramp,

Explanation / Answer

given data: force F = 72.0 N angle of inclination, = 30.0o
weight w = 128 N, displacement d = 5.20 m,
use work = force * displacement * cos
A) Wrope = F*d*cos(0)                  = 72.0*5.20*1                  = 374.4 J
B) Wgravity = G*d*cos(90 + )                     = 128*5.20*cos(120)                    =-332.8 J
c) WN = N*d*cos(90) = 0

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