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Exam1-Solutions-S14

# 8 or 40 s2 phy 2048 spring 2014 acosta rinzler

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Unformatted text preview: econd stone (in N) is (1) zero (2) 100 (3) 150 (4) 350 (5) 450 Since the stones are not moving, the net force must be zero! Problem 14 Two blocks of different masses M and m, labeled as such in the figure, lie on a frictionless surface and are accelerated by the force labeled F which pushes on block M. The force acting on mass m is: PHY 2048 Spring 2014 – Acosta, Rinzler Exam 1 solutions (1) mF/(m+M) (2) mF/M (3) mF/(m- M) (4) MF/(M+m) (5) MF/m The acceleration of the combined system is: F a= m+M Therefore the force on mass m is given by: mF Fm = ma = m+M Problem 15 A 1200 kg elevator accelerates upwards at 3.00 m/s2 (or 2.50, 2.00 m/s2). The tension in the cable lifting the elevator (in N) has value closest to: (1) 15,400 (2...
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