PLEASE SOLVE THIS : - ULL B RATED !! A object (mass = 360 kg) is in motion up an

Question

PLEASE SOLVE THIS : - ULL B RATED !!

A object (mass = 360 kg) is in motion up an inclined plane (Theta = 36.87degree); it is acted upon by the two forces F1 (4800 N parallel to the incline) and F2 (1200 N at phi = 30degree). We note that there is kinetic friction such that mu k = 0.50. How much work does gravity do on the object during any 5 m displacement up the inclined plane? (in Joules) How much work does friction do on the object during any 5 m displacement up the inclined plane? (in Joules)

Explanation / Answer

workdone by gravity = -m*g*sin(36.87)*5

= -10584 J

workdone by friction = -mue*(m*g*cos(36.87) - F2*cos(30) )*5

= -5556 J

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