Answer to Question #41004 in Mechanics | Relativity for alzahra ali

Question #41004
The 8kg mass shown in the Figure moves 5 m up an inclined (q = 300) rough surface
(k= 0.2) as a result of the applied tension (T = 40N). If the mass started from rest and
neglecting the masses of the pulley and the string, find:

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a) The work done by the frictional force
b) The work done by gravitational force
c) The work done by tension
d) The speed of the object at the end of its motion
e) If the surface is smooth (no friction) and sides of block which are in contact with
the rough surface are 20 cm by 40 cm, find the pressure exerted by the object on
the incline surface.
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