Question
In: Physics
A flywheel turns through 22 rev as it slows from an angular speed of 3.0 rad/s...
A flywheel turns through 22 rev as it slows from an angular speed of 3.0 rad/s to a stop.
(a) Assuming a constant angular acceleration, find the time for
it to come to rest.
= 92.15 s
(b) What is its angular acceleration?
_______rad/s2
(c) How much time is required for it to complete the first 11 of
the 22 revolutions?
_________ s
Solutions
genius_generous answered 2 years agoRelated Solutions
A flywheel turns through 30 rev as it slows from an angular speed of 5.5 rad/s...
A flywheel turns through 30 rev as it slows from an angular
speed of 5.5 rad/s to a stop. (a) Assuming a
constant angular acceleration, find the time for it to come to
rest. (b) What is its angular acceleration?
(c) How much time is required for it to complete
the first 15 of the 30 revolutions?
A wheel rotates with a constant angular acceleration of 3.0 rad/. If the angular speed of...
A wheel rotates with a constant angular acceleration of 3.0
rad/. If the angular speed of the wheel is 2 rad/s at t = 0,
through what angular displacement does the wheel rotate in 2
s?
10 rad.
6 rad.
15 rad.
4 rad.
12 rad.
Based on question number 3, through how many revolutions has the
wheel turned during this time interval?
4 rev.
3 rev.
1.6 rev.
5 rev.
2 rev.
Based on question number 3, what is...
At t = 0, a flywheel has an angular velocity of 10 rad/s, an angular acceleration...
At t = 0, a flywheel has an angular velocity of 10 rad/s, an
angular acceleration of -0.44 rad/s2, and a reference line at ?0 =
0. (a) Through what maximum angle ?max will the reference line turn
in the positive direction? What are the (b) first and (c) second
times the reference line will be at ? = ?max/4? At what (d)
negative time and (e) positive time will the reference line be at ?
= -8.0 rad?
At t = 0, a flywheel has an angular velocity of 6.2 rad/s, an angular acceleration...
At t = 0, a flywheel has an angular velocity of 6.2 rad/s, an
angular acceleration of -0.18 rad/s2, and a reference line at θ0 =
0. (a) Through what maximum angle θmax will the reference line turn
in the positive direction? What are the (b) first and (c) second
times the reference line will be at θ = θmax/5? At what (d)
negative time and (e) positive time will the reference line be at θ
= -7.7 rad?
A compact disc rotates from rest up to an angular speed of 34.3 rad/s in a...
A compact disc rotates from rest up to an angular speed of 34.3
rad/s in a time of 0.867 s.
(a) What is the angular acceleration of the
disc, assuming the angular acceleration is uniform?
rad/s2
(b) Through what angle does the disc turn while
coming up to speed?
rad
(c) If the radius of the disc is 4.45 cm, find the
tangential speed of a microbe riding on the rim of the disc.
m/s
(d) What is the magnitude...
1. A flywheel is initially rotating at 30 rad/s and has a constant angular acceleration. After...
1. A flywheel is initially rotating at 30 rad/s and has a
constant angular acceleration. After 8.0 s it has rotated through
460 rad. Its angular acceleration in rad/s is:
2.Ten seconds after an electric fan is turned on, the fan
rotates at 6000 rev/min. Its average angular acceleration in
rad/s2 is:
3.The rotational inertia of a disk about its axis is 0.70
kgˑm2. When a 2.0-kg weight is added to its rim, 0.50 m
from the axis, the rotational...
A wheel of radius 8 inches is rotating 15°/s. What is the linear speed v, the angular speed in RPM, and the angular speed in rad/s?
A wheel of radius 8 inches is rotating 15°/s. What is the linear speed v, the angular speed in RPM, and the angular speed in rad/s?
22. A wheel, orginally rotating at 125 rad/s undergoes a constant angular deceleration of 5.00 rad/s^2....
22.
A wheel, orginally rotating at 125 rad/s undergoes a constant
angular deceleration of 5.00 rad/s^2. What is its angular speed
after it has turned through an angle of 522 radians?
19. When you are out for a shopping, you noticed that the
digitial sign outside the shopping center reports that the
temperature is 43•C. What is the temperature in degrees Fahrenheit
?
16. A 77 -N •m torque acts on a wheel with a moment if inertia
175 kg...
A student on a piano stool rotates freely with an angular speed of 3.05 rev/s ....
A student on a piano stool rotates freely with an angular speed
of 3.05 rev/s . The student holds a 1.25 kg mass in each
outstretched arm, 0.749 m from the axis of rotation. The combined
moment of inertia of the student and the stool, ignoring the two
masses, is 5.53 kg⋅m2 , a value that remains
constant.
Part A
As the student pulls his arms inward, his angular speed
increases to 3.65 rev/s . How far are the masses...
A student on a piano stool rotates freely with an angular speed of 3.05 rev/s ....
A student on a piano stool rotates freely with an angular speed
of 3.05 rev/s . The student holds a 1.05 kg mass in each
outstretched arm, 0.779 m from the axis of rotation. The combined
moment of inertia of the student and the stool, ignoring the two
masses, is 5.53 kg⋅m2 , a value that remains constant.
Calculate the initial kinetic energy of the system.
Calculate the final kinetic energy of the system.
Please list every steps
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