Part BThe force of the added water produces a torque on the dam. In a simple model, if the torque due to the water were enough to cause the dam to break free fromits foundation, the dam would pivot about its base (point P). What is the magnitude T of the torque about the point P due to the water in the reservoir?Express your answer in terms of quantities given in the problem introduction and the magnitude of the acceleration due to gravity g.T=Submit15. ΑΣΦRequest Answer?

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Ⓒ Macmillan Learning A pipe system consists of three pipes with lengths L₁ = 1.80 m, L₂ = 0.600 m, and L3 = 2.50 m. A plumber pulls on the end of the pipe system, at the point P, with a force Fp = -24.0 Ni + 45.0 Nj + 35.0 NK. What is the torque 7 due to Fp about the origin? Enter your expression using ijk unit vector notation. 7 = Incorrect 4₁ P -43.2i +27j +87.5k N.m
Part A What is the angular momentum of a figure skater spinning at 2.6 rev/s with arms in close to her body, assuming her to be a uniform cylinder with a height of 15 m a radius of 16 cm, and a mass of 52 kg ? Express your answer using three significant figures and include the appropriate units. L= Value Submit Request Answer Units wg ?
A a paddle for a boat is constructed of a stick of length L and a "quartic" end piece. The end can be thought of as a uniform flat board of mass m that has been cut to form a quartic function given by y = x*, so that the length from the trough (i.e., the y 0 end of the function) to the tip is y = H. To simplify this a little, assume that the stick is massless. This paddle is stood vertically upward on the stick end and attached to a hinge on the floor so that it is free to rotate in the in/out of the page direction. When it is standing straight up that is an unstable equilibrium. A very small infinitesimal push is given to get the paddle moving and it swings downward under gravity (acceleration g). (a) When the paddle is standing vertically upward, what is the position of the center of mass of the paddle? (b) What is the moment of inertia of the paddle for rotations in/out of the page about an axis through the center of mass? (c) What is the angular velocity of the paddle just before…
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Part A Two metal disks, one with radius R1 = 2.40 cm and mass M = 0.900 kg and the other with radius R2 = 5.05 cm and mass M2 = 1.70 kg , are welded together and mounted on a frictionless axis through their common center. A light string is wrapped around the edge of the smaller disk and a 1.60 kg block is suspended from the free end of the string. What is the magnitude of the downward acceleration of the block after it is released? Take the free fall acceleration to be 9.80 m/s?. a = m/s? Submit Request Answer Part B Repeat the calculation of part (a), this time with the string wrapped around the edge of the larger disk. Take the free fall acceleration to be 9.80 m/s?. ? a = m/s² Submit Request Answer
You have a summer internship at NASA and are working on plans for a new space station to be launched into orbit around the Earth. The design of the space station is shown. i It is to be constructed in the shape of a hollow ring of mass 52,000 kg. The structures other than the ring shown in the figure have negligible mass compared to the ring. Members of the crew will walk on a deck formed by the inner surface of the outer cylindrical wall of the ring, with radius r = 140 m. The thickness of the ring is very small compared to the radius, so we can model the ring as a hoop. At rest when constructed, the ring is to be set rotating about its axis so that the people standing inside on this deck experience an effective free-fall acceleration equal to g. The rotation is achieved by firing two small rockets attached tangentially to opposite points on the rim of the ring. Your supervisor asks you to determine the following: (a) the time interval during which the rockets must be fired if each…
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A pulley on a frictionless axle has the shape of a uniform solid disk of mass 2.60 kg and radius 20.0 cm. A 1.90 kg stone is attached to a very light wire that is wrapped around the rim of the pulley (Figure 1), and the system is released from rest. For related problemsolving tips and strategies, you may want to view a Video Tutor Solution of An unwinding cable ii. Part A How far must the stone fall so that the pulley has 5.00 J of kinetic energy? Express your answer with the appropriate units. HÅ h = .58 m 0 ?

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