Move over Jeff Bezos, this invention is about to make you the richest person in the world. You have just invented the OyOy (that's YoYo spelled backwards). It is the very latest in home safety and so easy to use! If your building is on fire, simply reach out and grab the cord on the OyOy and you will be lowered safely toward the ground at a low velocity. The OyOy has a total mass M = 107.0 kg and is shaped like a cylinder of radius R = 0.850 meters. The secret to the operation of the OyOy is its patented shaft whose radius is only r = 0.0875 meters. The cord is wound around the small shaft and this is the secret to your low velocity. Outer Radius = R Spindle Radius - Rotation-OyOy-Energy Mass = M

College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Move over Jeff Bezos, this invention is about to make you the richest person in the world. You have just invented the OyOy (that's YoYo spelled backwards). It is the very latest in home safety and so
easy to use!
If your building is on fire, simply reach out and grab the cord on the OyOy and you will be lowered safely toward the ground at a low velocity. The OyOy has a total mass M = 107.0 kg and is shaped
like a cylinder of radius R = 0.850 meters. The secret to the operation of the OyOy is its patented shaft whose radius is only r = 0.0875 meters. The cord is wound around the small shaft and this is
the secret to your low velocity.
Outer Radius = R
Spindle Radius
Mass = M
Rotation-OyOy-Energy
Mass = m
Transcribed Image Text:Move over Jeff Bezos, this invention is about to make you the richest person in the world. You have just invented the OyOy (that's YoYo spelled backwards). It is the very latest in home safety and so easy to use! If your building is on fire, simply reach out and grab the cord on the OyOy and you will be lowered safely toward the ground at a low velocity. The OyOy has a total mass M = 107.0 kg and is shaped like a cylinder of radius R = 0.850 meters. The secret to the operation of the OyOy is its patented shaft whose radius is only r = 0.0875 meters. The cord is wound around the small shaft and this is the secret to your low velocity. Outer Radius = R Spindle Radius Mass = M Rotation-OyOy-Energy Mass = m
We will use the approximation that the shaft is of negligible mass compared to the total. This means that you can treat the entire OyOy as though it is a solid cylinder with mass M and radius R.
Imagine that a customer of mass m = 74.0 kg is using the OyOy and begins his decent from an initial height of yo = 11.90 meters.
Determine all the following:
The FORMULA for the moment of Inertia: I =
The FORMULA for the relationship between w and v: w =
The velocity of the customer at the ground: v=
MR²
2
NOTE:
V
r
m/s
Transcribed Image Text:We will use the approximation that the shaft is of negligible mass compared to the total. This means that you can treat the entire OyOy as though it is a solid cylinder with mass M and radius R. Imagine that a customer of mass m = 74.0 kg is using the OyOy and begins his decent from an initial height of yo = 11.90 meters. Determine all the following: The FORMULA for the moment of Inertia: I = The FORMULA for the relationship between w and v: w = The velocity of the customer at the ground: v= MR² 2 NOTE: V r m/s
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