- #1
emauer
- 2
- 0
1. The Problem
Two small blocks, each of mass m, are connected by a string of constant length 4h and negligible mass. Block A is placed on a smooth (frictionless) tabletop as shown above, and block B hangs over the edge of the table. The tabletop is a distance 2h above the floor. Block B is then released from rest at a distance h above the floor at time t = 0.
Express all algebraic answers in terms of h, m, and g. Assume the string rests on a pulley at the edge of the table instead of being in direct contact with the table itself as in picture.
a. Determine the acceleration of block B as it descends.
F=ma
It is my understanding that because there is no friction there is no force pulling block A to the left therefore no force counteracting the force of gravity pulling block B down. The acceleration of both blocks should therefore be 9.8m/s^2. I am told this is not the answer however.
Two small blocks, each of mass m, are connected by a string of constant length 4h and negligible mass. Block A is placed on a smooth (frictionless) tabletop as shown above, and block B hangs over the edge of the table. The tabletop is a distance 2h above the floor. Block B is then released from rest at a distance h above the floor at time t = 0.
Express all algebraic answers in terms of h, m, and g. Assume the string rests on a pulley at the edge of the table instead of being in direct contact with the table itself as in picture.
a. Determine the acceleration of block B as it descends.
Homework Equations
F=ma
The Attempt at a Solution
It is my understanding that because there is no friction there is no force pulling block A to the left therefore no force counteracting the force of gravity pulling block B down. The acceleration of both blocks should therefore be 9.8m/s^2. I am told this is not the answer however.