Homework Help: NEWTON'S LAWS (FORCES)

Posted by Mar on Saturday, October 8, 2011 at 8:48pm.

Two boxes, A and B, are connected to each end of a light vertical rope, as shown in the following figure. A constant upward force 78.0N is applied to box A . Starting from rest, box B descends 12.3 m in 3.80s . The tension in the rope connecting the two boxes is 30.0 N
What is the mass of box B?

NEWTON'S LAWS (FORCES) - drwls, Saturday, October 8, 2011 at 8:55pm
One post is enough.
The "following figure" is missing.
NEWTON'S LAWS (FORCES) - Anonymous, Sunday, October 9, 2011 at 2:51am
Mass of a is 6.7
Mass of b is 2.2

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