- #1
TjGrinnell
- 11
- 1
- Homework Statement
- I have two blocks, one with a mass of 20.0 kg and one with a mass of 30.0 kg. I need to move them up a ramp that is inclined at (14)° above horizontal. I put them onto the bottom of the ramp and tie the two block together with a short piece of string that runs parallel to the ramp. I tie a longer piece of string to the 20.0-kg block and use it to pull both blocks up the ramp. The longer string is inclined at 40.0° from horizontal. I pull the longer string, and the blocks move up the ramp with an acceleration of 1.00 m/s^2. Assume the coefficient of kinetic friction between each block and the ramp is 0.150.
Determine the magnitudes of the net force on the 30.0-kg block, the friction force on the 30.0-kg block, and the tension in the short string.
Determine the magnitudes of the net force on the 20.0-kg block, the friction force on the 20.0-kg block, and the tension in the longer string.
I pull on the string while the blocks move 2.40 m. What is the speed of the 30-kg block at the end of that time?
- Relevant Equations
- Very confused on what to do with the two strings and how to calculate the magnitude of Net forces because of this.