locks A, B, C are placed in the adjacent figure and connected by ropes of neglible mass. Both A and B weigh w = 25.0 N each and the coefficient of kinetic friction between each block and the surface is 0.35. A) If Block C descends with constant velocity find atleast three physical quantities.
To find at least three physical quantities when Block C descends with constant velocity, we need to consider the forces acting on the system and apply the principles of motion.
1. Force of gravity: Each block experiences a downward force due to gravity. Since both block A and block B weigh 25.0 N each, the force of gravity acting on each block is 25.0 N.
2. Frictional force: The coefficient of kinetic friction between each block and the surface is given as 0.35. The frictional force opposes the motion and acts in the opposite direction to the motion of Block C.
3. Tension in the ropes: The blocks are connected by ropes, which transmit forces between them. The tension in the ropes is equal to the force applied to pull Block C downward.
To determine these physical quantities, set up an equilibrium equation considering the forces acting on the system. Since Block C descends with constant velocity, the net force on the system is zero. This means the forces acting in the upward direction balance the forces acting in the downward direction.
1. Force of gravity on Blocks A and B: Each block experiences a force of gravity acting downward with a magnitude of 25.0 N.
2. Frictional force on Blocks A and B: Using the coefficient of kinetic friction (0.35), multiply it by the force of gravity (25.0 N) to find the force of friction acting on each block. The frictional force opposes the motion, so the frictional force is acting in the upward direction.
3. Tension in the ropes: Since the blocks are connected by ropes, the tension in the ropes is equal to the force applied to pull Block C downward. The tension can be calculated by summing up the forces acting in the upward direction, including the force of friction on Blocks A and B.
By calculating these quantities, you can determine the forces acting on the system.