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Mechanical Advantage The pulley system shown in Figure 6-41 is used to lift a m = 67 – kg crate. Note that one chain connects the upper pulley to the ceiling and a second chain connects the lower pulley to the crate Assuming the masses of the chains, pulleys and ropes are negligible, determine (a) the force
Figure 6-41
Problem 23
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- The system shown in Figure P5.49 has an acceleration of magnitude 1.50 m/s2. Assume that the coefficient of kinetic friction between block and incline is the same for both inclines. Find (a) the coefficient of kinetic friction and (b) the tension in the string.arrow_forwardTo get in shape, you head to the local gym to exercise by lifting weights. Using a lat machine (Fig. P5.48), you notice that the wire connected to the bar is run around three different pulleys and is connected to a vertical stack of weights on the other end. The weights move up and down as you pull down on the bar. Suppose you set the machine so that the weight to be lifted is 120.0 lb. When you pull down on the bar, exerting a constant force, the acceleration experienced by the weights is 0.250 m/s2. What tension must exist in the wire connecting the bar and weights under these conditions? Assume the pulleys are massless and frictionless. FIGURE P5.48arrow_forwardThree applied forces, F1 = 20.0 N, F2 = 40.0 N, and F3 = 10.0 N act on an object with a mass of 2.00 kg which can move along an inclined plane as shown in the figure. The questions refer to the instant when the object has moved 0.600 m along the surface of the inclined plane in the upward direction. Neglect friction and use g = 10.0 m/s2.Figure 7-5Refer to Figure 7-5. What is the amount of work done by the force F3 as the object moves up the inclined plane?arrow_forward
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- Question 9 of 11 1 Points The coefficient of kinetic friction is / Die koëffisiënt van kinetiese wrywing is: You are pushing a crate on the flat floor of a warehouse. Starting from rest, you apply an horizontal force of 42 N, and attain a speed of 1.7 m/s over a distance 9.5 m. If the crate weighs 15 kg, find the coefficient of kinetic friction between the floor and the crate? Give your answer with 3DDP. ly stoot 'n krat op die plat vloer van 'n pakhuis. Jy begin vanuit rus, en oefen 'n horisontale krag van 42 N op die krat uit, en bereik 'n snelheid van 1.7 m/s oor 'n afstand 9.5 m. As die krat 15 kg weeg, bepaal die koëffisiënt van kinetiese wrywing tussen die vloer en die krat? Gee jou antwoord met 3DDP. Question 10 of 11 1 Pointsarrow_forwardIn the figure, two blocks are connected over a pulley. The mass of block A is 8.30 kg and the coefficient of kinetic friction between A and the incline is 0.310. Angle e of the incline is 32.0. Block A slides down the incline at constant speed. What is the mass of block B? Frictionles, massless puilley Number Units Attempts: 0 of 5 used Submit Anwer Save for Later Last saved 14 hours ago. Saved work will be auto-subrnitted on the due date. Auto- submission can take up to 10 minutes. Using multiple attempts will impact your score. 20% score reduction after attempt 4arrow_forwardA block is sent up an incline with a velocity of 3.51 m/s. Assume there is no friction between the incline and the block. The angle is at an incline of 31.1 degrees with the horizontal. A) How far up the incline does the block go? B) How long does it take to get there? C) What is it's speed when it gets back to the bottom?arrow_forward
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