phy
posted by ivan on .
A 3.50 kg block on a smooth tabletop is attached by a string to a hanging block of mass 2.80 kg. The blocks are released from rest and allowed to move freely.
1Is the tension in the string greater than, less than, or equal to the weight of the hanging mass?
2Find the acceleration of the blocks.
3Find the tension in the string.

less than, the block is falling, so has to weigh less.
F=ma
2.80=(2.80+3.5)a solve for a
tension=2.80(ga)