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Answer to Question #40935 in Mechanics | Relativity for alzahra

Question #40935
The block resting on the rough surface and is connected to another object as shown.
The rope is massless and the pulley is frictionless. The coefficient of kinetic and static
friction between the block and the block are mk, ms respectively.
a) If the mass M=3kg so that the system is at rest, what is the static frictional force
fs? 2 marks
b) If the mass M=6kg so that the system will move under the influence of Mg, find
the acceleration of the system and the tension in the rope.
c) If the system starts its motion from rest, and it took the 6kg mass 2 seconds to
reach the ground, find the speed of the object at the end of the 2sec interval
a. Work-energy-theorem
b. Using 1-d equations, and comment on the answer.

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