An accelerating crane system consisting of two masses connected by a cable that passes through a massless pulley is shown below. The mass m, slides in a plane that is inclined by an angle e while the mass m2 moves in air and does not experience air resistance. m2

Q4.:Block A in Fig 2 weighs 50 N and block B weighs 35 N. The blocks are connected by a flexible inextensible cord which passes over a smooth pully at C. The coefficient of friction between the plane and the block A is 0.3. The blocks are initially at rest. Determine the tension in the cord and the velocity of A after it has travelled 5 m. B C Fig. 2 A 3 25 N 4

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= 60°. When released from rest, m1 accelerates downward at Two objects are connected by a light string that passes over a frictionless pulley as shown in the figure below. m1 = 6.00 kg, m2 = 6.00 kg, and o than 0.57 and to even begin sliding in the first place the coefficient of static friction must be less 1.421 m/s2. For this to happen, the coefficient of kinetic friction must be . Use g=9.8 m/s2. m2

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On earth, a block sitting on a frictionless, horizontal table accelerates at 7.11 m/s² when a 40-N horizontal force is applied to it. The block and table are then moved to the moon where the acceleration due to gravity is 1.65 m/s². Find the magnitude of the block's weight wm on the moon. Wm = N

An object rests on a horizontal frictionless surface. A horizontal force of magnitude F is applied. This force produces an acceleration: O only if F is larger than the weight of the object. O only while the object suddenly changes from rest to motion. O always. O only if the inertia of the object decreases. Onone of the given choices

8. Consider the system shown in figure. Block A weighs 45.0 N and block B weighs 25.0 N. Once block B is set into downward motion, it descends at a constant speed. (a) Calculate the coefficient of kinetic friction between block A and the tabletop. (b) A cat, also of weight 45.0 N, falls asleep on top of block A. If block B is now set into downward motion, what is its acceleration (magnitude and direction)? O -2.13 m/s^2 -4.56 m/s^2 -6.78 m/s^2 O -8.45 m/s^2 O No Answer A F

A force F1 is applied to a mass M1. If the same force F1 is applied to a mass M2 = 4M1 the acceleration of mass M1 is: one-half the acceleration of the mass M2. twice the acceleration of the mass M2. the same as for the mass M2. four times the acceleration of the mass M2. one-fourth the acceleration of the mass M2.