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

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One kind of elevator has the elevator car hanging
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 m and a mass of 400 kg
A motor drives the motion of the elevator by
exerting a torque on the pulley. Assume that
friction is negligibe.
Submit
Request Answer
Part C
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?
μνα 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
Transcribed Image Text:One kind of elevator has the elevator car hanging 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 m and a mass of 400 kg A motor drives the motion of the elevator by exerting a torque on the pulley. Assume that friction is negligibe. Submit Request Answer Part C 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? μνα 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
Constants
One kind of elevator has the elevator car hanging
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 m and a mass of 400 kg
A motor drives the motion of the elevator by
exerting a torque on the pulley. Assume that
friction is negligibe.
Part A
What is the magnitude of the torque the motor must exert in order to lift a fully-loaded elevator with a constant acceleration
of magnitude 1.0m/s²?
Hνα ΑΣφ
?
Nm
Submit
Request Answer
Figure
<) 1 of 1
Part B
What is the magnitude of the torque the motor must exert in order to lower a fully-loaded elevator with a constant
acceleration of magnitude 1.0m/s²?
counter
Nm
weight
Submit
Request Answer
Part C
elevator
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 olorator If it took 6 soconds for the olovator to travol up thos throo floors how much powor did the motor pood to
Transcribed Image Text:Constants One kind of elevator has the elevator car hanging 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 m and a mass of 400 kg A motor drives the motion of the elevator by exerting a torque on the pulley. Assume that friction is negligibe. Part A What is the magnitude of the torque the motor must exert in order to lift a fully-loaded elevator with a constant acceleration of magnitude 1.0m/s²? Hνα ΑΣφ ? Nm Submit Request Answer Figure <) 1 of 1 Part B What is the magnitude of the torque the motor must exert in order to lower a fully-loaded elevator with a constant acceleration of magnitude 1.0m/s²? counter Nm weight Submit Request Answer Part C elevator 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 olorator If it took 6 soconds for the olovator to travol up thos throo floors how much powor did the motor pood to
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