Cable Elevator Watchman 00 Ring Burgler

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A and B
1. Late at night in the Chrysler Building a night watchman is standing in an elevator stopped on the
12th floor. Unbeknownst to him, a burglar is hanging from a metal ring attached to the underside
of the elevator.
Cable
A) For each of the four objects: burglar, ring, elevator, and
watchman, list all the forces acting on each object (e.g.
for the burglar, there is the gravitational force pulling
him down and the force of the ring pulling him up).
Elevator
Watchman
B) Looking through the forces you listed in A) identify all
the force pairs that follow from Newton's 3rd Law.
00
Ring
C) Using the fact that everyone is at rest, write all the forces
you identified in A) in terms of the mass of the burglar
Burgler
(mb), the mass of the ring (m,), the mass of the elevator
(m.), the mass of the watchman (mw), and the
gravitational acceleration, g.
D) In terms of these masses and g, what is the tension on the elevator cable?
Transcribed Image Text:1. Late at night in the Chrysler Building a night watchman is standing in an elevator stopped on the 12th floor. Unbeknownst to him, a burglar is hanging from a metal ring attached to the underside of the elevator. Cable A) For each of the four objects: burglar, ring, elevator, and watchman, list all the forces acting on each object (e.g. for the burglar, there is the gravitational force pulling him down and the force of the ring pulling him up). Elevator Watchman B) Looking through the forces you listed in A) identify all the force pairs that follow from Newton's 3rd Law. 00 Ring C) Using the fact that everyone is at rest, write all the forces you identified in A) in terms of the mass of the burglar Burgler (mb), the mass of the ring (m,), the mass of the elevator (m.), the mass of the watchman (mw), and the gravitational acceleration, g. D) In terms of these masses and g, what is the tension on the elevator cable?
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