One kind of elevator has the elevator car hangingfrom a cable, which then passes over a pulley andconnects to a counterweight, as shown in (Figure1). The mass of a fully-loaded elevator (that is, theelevator and all its passengers) is 1700 kg , themass of the counterweight is 1550 kg , and thepulley has a radius of 0.4 m and a mass of 400 kgA motor drives the motion of the elevator byexerting a torque on the pulley. Assume thatfriction is negligibe.SubmitRequest AnswerPart CA group of people get on a fully-loaded elevator and ride it up three floors (a distance of about 9 meters), where they exitthe elevator. If it took 5 seconds for the elevator to travel up those three floors, how much power did the motor need toprovide?μνα ΑΣφFigure1 of 1SubmitRequest AnswerPart DTo see the value of the counterweight, repeat the calculation in Part C if the elevator had no counterweight (or alternatively,if the mass of the counterweight were Okg).counterweightSubmitRequest Answerelevator ConstantsOne kind of elevator has the elevator car hangingfrom a cable, which then passes over a pulley andconnects to a counterweight, as shown in (Figure1). The mass of a fully-loaded elevator (that is, theelevator and all its passengers) is 1700 kg , themass of the counterweight is 1550 kg , and thepulley has a radius of 0.4 m and a mass of 400 kgA motor drives the motion of the elevator byexerting a torque on the pulley. Assume thatfriction is negligibe.Part AWhat is the magnitude of the torque the motor must exert in order to lift a fully-loaded elevator with a constant accelerationof magnitude 1.0m/s²?Hνα ΑΣφ?NmSubmitRequest AnswerFigure<) 1 of 1Part BWhat is the magnitude of the torque the motor must exert in order to lower a fully-loaded elevator with a constantacceleration of magnitude 1.0m/s²?counterNmweightSubmitRequest AnswerPart CelevatorA group of people get on a fully-loaded elevator and ride it up three floors (a distance of about 9 meters), where they exitthe olorator If it took 6 soconds for the olovator to travol up thos throo floors how much powor did the motor pood to

Given that mass of the counter weight and mass of the fully loaded elevator and radius of the pulley…

One kind of elevator has the elevator car hanging Submit Request Answer from a cable, which then passes over a pulley and connects to a counterweight, as shown in (Figure 1). The mass of a fully-loaded elevator (that is, the elevator and all its passengers) is 1700 kg , the mass of the counterweight is 1550 kg , and the pulley has a radius of 0.4 A motor drives the motion of the elevator by exerting a torque on the pulley. Assume that friction is negligibe. Part C and a mass of 400 kg A group of people get on a fully-loaded elevator and ride it up three floors (a distance of about 9 meters), where they exit the elevator. If it took 5 seconds for the elevator to travel up those three floors, how much power did the motor need to provide? Nνα ΑΣφ ? Figure < 1 of 1> Submit Request Answer Part D To see the value of the counterweight, repeat the calculation in Part C if the elevator had no counterweight (or alternatively, if the mass of the counterweight were Okg). ? counter weight Submit Request Answer elevator

One kind of elevator has the elevator car hanging Submit Request Answer from a cable, which then passes over a pulley and connects to a counterweight, as shown in (Figure 1). The mass of a fully-loaded elevator (that is, the elevator and all its passengers) is 1700 kg , the mass of the counterweight is 1550 kg , and the pulley has a radius of 0.4 A motor drives the motion of the elevator by exerting a torque on the pulley. Assume that friction is negligibe. Part C and a mass of 400 kg A group of people get on a fully-loaded elevator and ride it up three floors (a distance of about 9 meters), where they exit the elevator. If it took 5 seconds for the elevator to travel up those three floors, how much power did the motor need to provide? Nνα ΑΣφ ? Figure < 1 of 1> Submit Request Answer Part D To see the value of the counterweight, repeat the calculation in Part C if the elevator had no counterweight (or alternatively, if the mass of the counterweight were Okg). ? counter weight Submit Request Answer elevator

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter10: Fixed-axis Rotation

Section: Chapter Questions

Problem 10.2CYU: Check Your Understanding A centrifuge used in DNA extraction spins at a maximum rate of 7000 rpm,...

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Check Your Understanding A centrifuge used in DNA extraction spins at a maximum rate of 7000 rpm, producing a “g-force on the sample that is 6000 times the force of gravity. If the centrifuge takes 10 seconds to come to rest from the maximum spin rate: (a) What Is the angular acceleration of the centrifuge? (b) What is the angular displacement of the centrifuge during this time?
Check Your Understanding A flywheel has a radius of 20.0 cm What is the speed of a point on the edge of the flywheel if it experiences a centripetal acceleration of 900.0cm/s2 ?
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A 2 kg mass is spun on a string in a horizontal circular path at a constant speed. Draw a FBD of the mass. If the radius of the path is 0.5 m and the period of revolution is 0.25 s, what is the speed of the mass? (Answer with 3 sig figs)
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what is the rate of revolution [ in revolution per minute (or rpm)] of a centrifuge if a particle that is 5.0 cm away fromits axis of rotation is accelerated by a rate of 1 500 g?
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Turn to chapter 4, problem 46, expect let's have the cliff angled at 21 deg., the skier launching at 20 m/s, and the cliff's height at 105.6 m. How far horizontally will the skier go?