Part A Determine the speed of the 59 kg cylinder after it has descended a distance of 2 m, starting from rest. Gear A has a mass of 14 kg and a radius of gyration of 125 mm about its center of mass. Gear B and drum C have a combined mass of 30 kg and a radius of gyration about their center of mass of 150 mm . Express your answer to three significant figures and include the appropriate units. HẢ vp = Value Units Submit Request Answer
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- A merry-go-round accelerates from rest to 0.70 rad/s in 30 s. Part A Assuming the merry-go-round is a uniform disk of radius 8.0 m and mass 3.20×104 kg , calculate the net torque required to accelerate it. Express your answer to two significant figures and include the appropriate units.I Re You're carrying a 3.6-m-long, 24 kg pole to a construction site when you decide to stop for a rest. You place one end of the pole on a fence post and hold the other end of the pole 35 cm from its tip. Part A For the steps and strategies involved in solving a similar problem, you may view a Video Tutor Solution. How much force must you exert to keep the pole motionless in a horizontal position? Express your answer in newtons. Vo AE F = N Submit Previous Answers Request AnswerPart 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 ?
- Part A Determine the magnitude of the moment of the force F = {320i 200j + 160k}N about the x axis. (Figure 1) Express your answer to three significant figures and include the appropriate units. ? M = Value Units Figure < 1 of 1 Submit Request Answer Provide Feedback Ne: 0.3 m 0.4 m 0.2 m FA system consists of three blocks with masses on a frictionless surface as shown in the figure below. Image size: s ML Max Part a The three blocks (from left to right in the figure) have masses of 3.51 kg, 1.09 kg and 7.17 kg. The leftmost block has a velocity of 3.34 m/s toward the right, the center block is stationary, and the rightmost block as a velocity of 2.71 m/s toward the left. Assuming movement toward the right is positive, what is the center of mass velocity of this system as pictured (prior to collision)? Please enter a numerical answer below. Accepted formats are numbers or "e" based scientific notation e.g. 0.23, -2, 1e6, 5.23e-8 Enter answer here m/s No answer submitted 0 of 3 attempts used CHECK ANSWER Part b !!! Contents Back Scroll To Top 13 PAGES NOV W 25You 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…
- n a carbon monoxide (CO) molecule, the distance between the oxygen atom and the carbon atom is 1.13 × 10-10 meters. The mass of an oxygen atom is 16 atomic mass units (amu) and the mass of a carbon atom is 12 amu. How far from the oxygen (O) atom is the center of mass of the molecule, in meters? Justify your answer using your equations and rationale used.A 430 g, 8.5-cm-diameter can is filled with uniform, dense food. It rolls across the floor at 1.5 m/s . Part A What is the can's kinetic energy? Express your answer with the appropriate units. μA Value UnitsA merry-go-round is a common piece of playground equipment. A 3.0-m-diameter merry-go-round, which can be modeled as a disk with a mass of 280 kg, is spinning at 16 rpm. John runs tangent to the merry- go-round at 5.4 m/s, in the same direction that it is turning, and jumps onto the outer edge. John's mass is 30 kg. Part A What is the merry-go-round's frequency, in rpm, after John jumps on? Express your answer in revolutions per minute to two significant figures. VE ΑΣΦ w = 23 Submit Previous Answers Request Answer ? * Incorrect, Try Again; 5 attempts remaining rpm
- b.You lift the child by using your elbow joint (pivot point). If the child's mass is 27 kg and distance from child to elbow joint is 0.40 m, calculate the torque?C.A ball slides with initial velocity 0.9 m/s on a frictionless surface and collides with another identical ball of mass at rest. The balls stick together after the collision. Calculate the final velocity of the balls?The 500 kg concrete culvert has a mean radius of 0.5m. Part A If the truck has an acceleration of 3 m/s?, determine the culvert's angular acceleration. Assume that the culvert does not slip on the truck bed, and neglect its thickness. (Figure 1) Express your answer with the appropriate units. HÀ ? a = Value Units Submit Request Answer Figure 1 of 1 Provide Feedback Next > 4 m 3 m/s 0.5m