Two blocks are connected together by a rope, and another rope is attached to the

Question

Two blocks are connected together by a rope, and another rope is attached to the block on the right and pulled as shown below. If the blocks are on a frictionless surface, what is their acceleration?

A. 14.0 m/s2
B. 10.5 m/s2
C. 7.0 m/s2
D. 3.5 m/s2
E. 21.0 m/s2

Two blocks are connected together by a rope, and another rope is attached to the block on the right and pulled as shown below. If the blocks are on a frictionless surface, what is their acceleration? A. 14.0 m/s2 B. 10.5 m/s2 C. 7.0 m/s2 D. 3.5 m/s2 E. 21.0 m/s2

Explanation / Answer

Fnet = F*cos(60)

= 42*0.5

= 21 N

a = Fnet/(m1+m2)

= 21/(2+4)

= 3.5 m/s^2

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