> Bing Inbox (19) - mwboutin@gma x Uh-oh! There's a problem wit × A steel wheel is mounted on OSu Written HW 07 Microsoft Word - HW 07.doc X O File | C:/Users/mwbou/Downloads/Written%20HW%2007%20(1).pdf Microsoft Word - HW 07.docx 5/5 9 cm 2 cm 2.5 cm Il cm 7 cm 11. A steel wheel is mounted on a frictionless bearing as shown in the left figure above. A cross sectional diagram of the wheel is shown in the right figure below. A 2 m length of chord is carefully wound around the rum of the wheel. The chord is then pulled with a constant force of 27 N until the chord has completely unwound from the wheel. a) Determine the moment of inertia of the wheel. b) Determine how much work is done to get the wheel spinning (just after the chord is free of the wheel) and how this compares to the final kinetic energy of the spinning wheel? Note that the density, p, of the steel is 7.874 g/cm³. Some hints that might help in working this problem: Although we're not told the what the mass of the wheel is, we are given the density of the steel out of which it is made. Note that mass the mass of an object is the product of is density and its volume: m = pV . As can be seen in the cross sectional diagram above, this is not a simple solid wheel. Recall that I- Σm.y =ΣL. The wheel obviously has a hole in its center so it can be mounted on an axle. However, when the wheel is spinning, the hole is filled with the matter making up the axle. If we assume the axle is made of steel with the same density as the wheel, we can consider it part of the wheel and treat the wheel as if it didn't have a hole in its center when we're trying to find its Moment of Inertia. We might need to find the total angle, AO, through which the wheel turns as the chord is being pulled. This might be useful, for example, if we want to use any of the kinematic equations for ...
> Bing Inbox (19) - mwboutin@gma x Uh-oh! There's a problem wit × A steel wheel is mounted on OSu Written HW 07 Microsoft Word - HW 07.doc X O File | C:/Users/mwbou/Downloads/Written%20HW%2007%20(1).pdf Microsoft Word - HW 07.docx 5/5 9 cm 2 cm 2.5 cm Il cm 7 cm 11. A steel wheel is mounted on a frictionless bearing as shown in the left figure above. A cross sectional diagram of the wheel is shown in the right figure below. A 2 m length of chord is carefully wound around the rum of the wheel. The chord is then pulled with a constant force of 27 N until the chord has completely unwound from the wheel. a) Determine the moment of inertia of the wheel. b) Determine how much work is done to get the wheel spinning (just after the chord is free of the wheel) and how this compares to the final kinetic energy of the spinning wheel? Note that the density, p, of the steel is 7.874 g/cm³. Some hints that might help in working this problem: Although we're not told the what the mass of the wheel is, we are given the density of the steel out of which it is made. Note that mass the mass of an object is the product of is density and its volume: m = pV . As can be seen in the cross sectional diagram above, this is not a simple solid wheel. Recall that I- Σm.y =ΣL. The wheel obviously has a hole in its center so it can be mounted on an axle. However, when the wheel is spinning, the hole is filled with the matter making up the axle. If we assume the axle is made of steel with the same density as the wheel, we can consider it part of the wheel and treat the wheel as if it didn't have a hole in its center when we're trying to find its Moment of Inertia. We might need to find the total angle, AO, through which the wheel turns as the chord is being pulled. This might be useful, for example, if we want to use any of the kinematic equations for ...
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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Transcribed Image Text:> Bing
Inbox (19) - mwboutin@gma x
Uh-oh! There's a problem wit ×
A steel wheel is mounted on
OSu Written HW 07
Microsoft Word - HW 07.doc X
O File | C:/Users/mwbou/Downloads/Written%20HW%2007%20(1).pdf
Microsoft Word - HW 07.docx
5/5
9 cm
2 cm
2.5 cm
Il cm
7 cm
11. A steel wheel is mounted on a frictionless bearing as shown in the left figure above. A cross
sectional diagram of the wheel is shown in the right figure below. A 2 m length of chord is carefully
wound around the rum of the wheel. The chord is then pulled with a constant force of 27 N until the
chord has completely unwound from the wheel. a) Determine the moment of inertia of the wheel. b)
Determine how much work is done to get the wheel spinning (just after the chord is free of the wheel)
and how this compares to the final kinetic energy of the spinning wheel? Note that the density, p, of
the steel is 7.874 g/cm³.
Some hints that might help in working this problem:
Although we're not told the what the mass of the wheel is, we are given the density of the steel
out of which it is made. Note that mass the mass of an object is the product of is density and
its volume: m = pV .
As can be seen in the cross sectional diagram above, this is not a simple solid wheel. Recall that
I- Σm.y =ΣL.
The wheel obviously has a hole in its center so it can be mounted on an axle. However, when
the wheel is spinning, the hole is filled with the matter making up the axle. If we assume the
axle is made of steel with the same density as the wheel, we can consider it part of the wheel
and treat the wheel as if it didn't have a hole in its center when we're trying to find its Moment
of Inertia.
We might need to find the total angle, AO, through which the wheel turns as the chord is being
pulled. This might be useful, for example, if we want to use any of the kinematic equations for
...
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