A system of boxes are attached and arranged together as shown in the drawing at

Question

A system of boxes are attached and arranged together as shown in the drawing at the precise moment they are released from rest. Both the tabletop and pulley are frictionless. The quality (or qualities) that the 2 boxes share in common are: the magnitude of their acceleration. the tension in their strings. neither of the above choices. both of the above choices. The magnitude of the acceleration of the system is: 2.8 m/s2 4.2 m/s2 3.7 m/s2 none of these The tension of the string above the hanging mass is closest to: 14N 17N 18N 24N

Explanation / Answer

7) d. both of the above choices.

8) 3g - T = 3a

T = 5a

a = 3g/(5 + 3) = 3.7 m/s2 Ans. (c)

9) T = 3(9.81 - 3.7) = 18.33 N Ans.(c)

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