The figure below shows the same two blocks A and But now suspended by a string on either side of a frictionless pulley. a. Find the accelerations of the two blocks b. Find the tension in the string A block with mass m1 = 4.00 kg and a ball with mass m2 = 7.00 kg are connected by a light string that passes over a frictionless pulley, as shown in Figure 4.23a. The coefficient of kinetic friction between the block and the surface is 0.300. Find the acceleration of the two objects and the tension in the string. m2

13. A7.5 kg backpack is sliding across the floor. The coefficient of friction between the backpack and the floor is 0.20. Answer the following: b) What is the normal force between the backpack and the floor? Your answer: O 1.5 N O 7.4 N O 15 N O 74 N

Weight is one type of forces, it is a vector ( magnitude and direction, always vertically downward). it is an extrinsic properties,  depending on surroundings. While Mass is a scalar, not depending on its surroundings.   a. True b. False

Two blocks with masses M1 and M2 hang one under the other. For this problem, take the positive direction to be upward, and use g for the magnitude of the free-fall acceleration. Assume accelerating the blocks are accelerating upward (due to the tension in the strings) with acceleration of magnitude a. a. Find T2, the tension in the lower rope. b. Find T1, the tension in the upper rope.

A crane lift a load of bricks of mass 1,750 kg at initial acceleration of 1.64 m/s^2. Calculate the tension in the cable? ?N