Question

Block A is at rest on a frictionless incline. It is attached to block B over a pulley. Block A has mass of 4.50 kg and block B has a mass of 5.50 kg. When the system is released, block A moves up the incline 1.5 m, after which it has a speed of 3.00 m/s.

Answer 1

The weight of the blocks is

$$W_A=m_Ag=44.1\text{ N},\\ W_B=m_Bg=53.9\text{ N}.$$