(Figure 1) A bicycle wheel is mounted on a fixed, frictionless axle, with a light string wound around its rim. The wheel has moment of inertia I = km2, where m is its mass, r is its radius, and k is a dimensionless constant between zero and one. The wheel is rotating counterclockwise with angular speed wo, when at time t=0 someone starts pulling the string with a force of magnitude F. Assume that the string does not slip on the wheel. Figure < 1 of 1 > Y Part A Suppose that after a certain time t, the string has been pulled through a distance L. What is the final rotational speed wfinal of the wheel? Express your answer in terms of L, F, I, and wo. ▸ View Available Hint(s) 15] ΑΣΦΑ Wfinal= Submit Part B P= What is the instantaneous power P delivered to the wheel via the force Fat time t=0? Express the power in terms of some or all of the variables given in the problem introduction. ▸ View Available Hint(s) 195] ΑΣΦΑ Submit C Provide Feedback ? ?

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Item 5
(Figure 1)
A bicycle wheel is mounted on a fixed, frictionless axle, with a light string wound around its
rim. The wheel has moment of inertia I = kmr², where m is its mass, r is its radius, and
k is a dimensionless constant between zero and one. The wheel is rotating
counterclockwise with angular speed wo, when at time t = 0 someone starts pulling the
string with a force of magnitude F. Assume that the string does not slip on the wheel.
Figure
F
< 1 of 1
Part A
Suppose that after a certain time t, the string has been pulled through a distance L. What is the final rotational speed Wfinal of the wheel?
Express your answer in terms of L, F, I, and wo.
► View Available Hint(s)
Wfinal =
Submit
Part B
P =
What is the instantaneous power P delivered to the wheel via the force at time t = 0?
Express the power in terms of some or all of the variables given in the problem introduction.
► View Available Hint(s)
VE ΑΣΦ
Submit
IVE| ΑΣΦ
Provide Feedback
?
?
Transcribed Image Text:Item 5 (Figure 1) A bicycle wheel is mounted on a fixed, frictionless axle, with a light string wound around its rim. The wheel has moment of inertia I = kmr², where m is its mass, r is its radius, and k is a dimensionless constant between zero and one. The wheel is rotating counterclockwise with angular speed wo, when at time t = 0 someone starts pulling the string with a force of magnitude F. Assume that the string does not slip on the wheel. Figure F < 1 of 1 Part A Suppose that after a certain time t, the string has been pulled through a distance L. What is the final rotational speed Wfinal of the wheel? Express your answer in terms of L, F, I, and wo. ► View Available Hint(s) Wfinal = Submit Part B P = What is the instantaneous power P delivered to the wheel via the force at time t = 0? Express the power in terms of some or all of the variables given in the problem introduction. ► View Available Hint(s) VE ΑΣΦ Submit IVE| ΑΣΦ Provide Feedback ? ?
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