Assignment:
Question 1. A 70 kg painter standing on a long 5.5 m board which suspended from 2 vertical ropes attaches to each end of the board. Board is 15 kg.
If the painter stood 1.5 m from one end of the board what will be the tensions in ropes?
Question 2. We have system with incline plane and pulley.
Incline plane: angle = 30 degree
Pulley: radius = 0.1m, mass = 0.1kg
We have to masses M1 = 8kg and M2 = 3kg connected by sting. M1 on the incline plane, M2 suspended thru pulley (vertically)
a. What is the acceleration of the masses? (neglect friction and string mass)
b. If the pulley has a constant frictional torque of 0.05m*N when the system is in motion what is acceleration of masses? (Hint: Isolate the forces. The tensions in the string are different. Why?)