Mock Exam 2 without solution

# Mock Exam 2 without solution - =20 degree M2FMock Exam 2 M1...

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F M1 M2 =20 degree Θ Mock Exam 2 Closed book, note! Formula provided! 1) (30 points) A mass m1 rests on top of another mass, m2, which in turn rests on a frictionless horizontal surface (Figure 1 below). A light cord is attached to m2, which is used to pull on it with a force F. a. Find the acceleration of each object when the surface between the two objects is frictionless. b. Find the acceleration of each object when the surface between the two objects is rough enough to ensure that m1 does not slide on m2. c. What are the magnitude and direction of the contract forces exerted by the lower object on the upper one assuming that the upper object is sliding on the lower object with a nonzero coefficient of kinetic friction µk . d. Find the acceleration of each object if the surface between the two objects is such that the upper object is sliding on the lower one under the influence of kinetic friction, with a coefficient of kinetic friction µk .

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2) (30 points) A 3 kg block is held against a spring with spring constant k = 25 N/cm, compressing
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Mock Exam 2 without solution - =20 degree M2FMock Exam 2 M1...

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