1. Two equal masses A and B are connected by a light string over a smooth pulley. The inclined is smooth. Which of the following is/are correct after they are released? Note that block A moves towards the inclined plane while block B is held in the position parallel to the height of the inlined plane)
(1) Both A and B moves with the same magnitude of acceleration.
Why does this statement be true?
When they are released, block A should undergo constant velocity and block B should undergo accleration due to gravity.
(2) Both A and B experience the same magnitude of resultant force during the moion.
(3) The P.E. lost by B is equal to the K.E. gained by B.
更新1:
Plz help me ^0^!
更新2:
Is uniform velocity = constant velocity??
