A 100-kg block is released from rest. It takes it 0.90 s for the 100 kg mass to travel 1.0 m to the floor. What is the acceleration of either mass, given the smaller mass m is 60 kg? The pulley does not have significant mass or friction.

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ebAssign 110 N 40 ASK YOUR TEACHER 3. DETAILS SERCP11 4.7.P.065.MI. Objects with masses m, = 15.0 kg and m, = 8.0 kg are connected by a light string that passes over a frictionless pulley as in the figure below. If, when the system starts from rest, m, falls 1.00 m in 1.78 s, determine the coefficient of kinetic friction between m, and the table. 4. DETAILS SERCP11 5.2.OP.015. ASK YOUR TEACHER A 7.80 g bullet is initially moving at 620 m/s just before it penetrates a block of wood to a depth of 5.80 cm. (a) What is the magnitude of the average frictional force (in N) that is exerted on the bullet while it is moving through the block of wood? Use work and energy considerations to obtain your answer. (b) Assuming the frictional force is constant, how much time (in s) elapses between the moment the bullet enters the block of wood and the moment it stops moving?

The winch delivers a horizontal towing force F to its cable at A which varies as shown in the graph. (Figure 1) Figure PR B F(N) 600 360 12 24 t(s) 1 of 1 Part A Determine the speed of the 72 kg bucket when t = 23 s. Originally the bucket is moving upward at v1 = 4 m/s. Express your answer to three significant figures and include the appropriate units. V2 = Value Submit μA Provide Feedback Request Answer Units ?

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Problem 4 In the above figure, three ballot boxes are connected by cords, one of which wraps over a pulley having negligible friction on its axle and negligible mass. The three ballot box masses are mA = 30.0 kg, mB 40.0 kg, and mc 10.0 kg. When the assembly is released from %3D rest, what is the tension in the cord connecting B and C?

Two blocks of mass m 15 kg and mp 10 kg are connected by a massless string that passes over a pulley as shown in the figure below. The system is in static equilibrium. There is friction between Block A and the surface (u-0.7) but neglect the friction between the string and the pulley. What is the static friction force on Block A? Pulley A. String B. 98.0 N 49.0 N O 147 N )103.0 N OON

In the Atwood machine shown below, ml = 2.00-kg and m2 = 5.60-kg. The masses of the pulley and string are negligible by comparison. The pulley turns without friction and the string does not stretch. The lighter object is released with a sharp push that sets it into motion at vi = 2.15 m/s downward. How long will it take for mị to reach the lowest level? m1 m2

1. For the pulley system shown, Mi has a mass of 42 kg and an associated coefficient of friction of μ=0.45. M2 has a mass of 18 kg and an associated coefficient of friction of μ2=0.32. Determine the minimum value of mass Mo that will cause mass Mo to fall. Ans: Mo=74.4 kg M. M. DOE M

The coefficient of friction between the inner pulley and the belt is 1/π. Find the maximum value of W that can be supported without rotating the compound pulley P or slipping the belt on the compound pulley P. Pulley B is frictionless. A 200 lb o A P B W