32. (II) A merry-go-round accelerates from rest to 0.68 rad/s in 34 s. Assuming the merry-go-round is a uniform disk of radius 7.0 m and mass 31,000 kg, calculate the net torque required to accelerate it.

32. (II) A merry-go-round accelerates from rest to 0.68 rad/s in 34 s. Assuming the merry-go-round is a uniform disk of radius 7.0 m and mass 31,000 kg, calculate the net torque required to accelerate it.

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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Question

Question 32

large pottery
their circular
of 2.0 cm and
29. (II) Determine the net torque on
the 2.0-m-long uniform beam shown
in Fig. 8-45. All forces are shown.
Calculate about (a) point C, the CM,
and (b) point P at one end.
56 N
contact with
32
ping. Calcu-
- wheel, and
its required
65 N
45
ht on each
a circle of
niog lo ye
ne exerts?
he wheel
prque of
P
ponu
FIGURE 8-45
58°
Problem 29.
52 N
8-5 and 8-6 Rotational Dynamics
30. (I) Determine the moment of inertia of a 10.8-kg sphere of
radius 0.648 m when the axis of rotation is through its center.
31. (I) Estimate the moment of inertia of a bicycle wheel 67 cm
in diameter. The rim and tire have a combined mass of
1.1 kg. The mass of the hub (at the center) can be ignored
(why?).
32. (II) A merry-go-round accelerates from rest to 0.68 rad/s
in 34 s. Assuming the merry-go-round is a uniform disk of
radius 7.0 m and mass 31,000 kg, calculate the net torque
e end
required to accelerate it.
33. (II) An oxygen molecule consists of two oxygen atoms whose
total mass is 5.3 × 10¬2º kg and whose moment of inertia
about an axis perpendicular to the line joining the two atoms,
midway between them, is 1.9 × 10-46 kg·m². From these
data, estimate the effective distance between the atoms.
orque
and
ends
-43.
hen
34. (II) A grinding wheel is a uniform cylinder with a radius of
8.50 cm and a mass of 0.380 kg. Calculate (a) its moment of
inertia about its center, and (b) the applied torque needed
to accelerate it from rest to 1750 rpm in 5.00 s. Take into
the
n0on measured to slow

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