Two boxes are connected by a massless string across a massless, frictionless pul

Question

Two boxes are connected by a massless string across a massless, frictionless pulley as shown in the figure below. Box 1 with a mass of M1=25kg sits of a horizontal, frictionless surface. Box 2 with a mass of M2=15kg sits on a plane inclined at an angle of 50 degrees above the horizontal. The coefficient of kinetic friction between box 2 and the inclined plane is 0.50. What is the magnitude of the acceleration of the two boxes?

a) 2.72 m/s^2

b) 3.51 m/s^2

c) 4.94 m/s^2

d) 0.955 m/s^2

e) 1.63 m/s^2

Explanation / Answer

m2gsin40-m2gcos40=(m2a)

a=4.94 m/s^2

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