- #1
cdotter
- 305
- 0
Homework Statement
Block A (mass 2.25 kg) rests on a tabletop. It is connected by a horizontal cord passing over a frictionless pulley to a hanging block B (mass 1.30 kg.) The coefficient of kinetic friction between block A and the table is 0.450. After the blocks are released from rest, find a. the speed of each block after moving 3.00 cm and b. the tension of the cord.
Homework Equations
The Attempt at a Solution
Block A:
Fgravity: (2.25kg)(9.8m/s2) = 22.05N
Fnormal: 22.05N
Ffriction: (22.05N)(0.450) = 9.92N
Resultant force: 22.05N - 9.92N = 12.13N
Block B:
Fgravity: (1.30kg)(9.8m/s2) = 12.74N
I have no idea what to do after this. I found the exact same problem through a search but I don't understand the explanation.