Question

A flywheel with a diameter of 2.32 m is rotating at an angular speed of 103 rev/min. (a) What is the angular speed of the flywheel in radians per second? (b) What is the linear speed of a point on the rim of the flywheel? (c) What constant angular acceleration (in revolutions per minute-squared) will increase the wheel's angular speed to 1120 rev/min in 67.8 s? (d) How many revolutions does the wheel make during that 67.8 s?

Answer #1

A flywheel with a diameter of 2.38 m is rotating at an angular
speed of 121 rev/min. (a) What is the angular
speed of the flywheel in radians per second? (b)
What is the linear speed of a point on the rim of the flywheel?
(c) What constant angular acceleration (in
revolutions per minute-squared) will increase the wheel's angular
speed to 933 rev/min in 71.7 s? (d) How many
revolutions does the wheel make during that 71.7 s?

A flywheel with a diameter of 5.20 m is rotating at an
angular speed of 300 rev/min. What is the linear speed of a point
on the rim of the flywheel?
A.82 m/s
B.101 m/s
C.32 m/s
D.27 m/s

The flywheel of a steam engine runs with a constant angular
velocity of 150 rev/min. When steam is shut off, the friction of
the bearings and of the air stops the wheel in 1.9 h.
(a) What is the constant angular acceleration, in
revolutions per minute-squared, of the wheel during the slowdown?
(b) How many revolutions does the wheel make
before stopping? (c) At the instant the flywheel
is turning at 75.0 rev/min, what is the tangential component of the...

A 70.0-cm diameter flywheel is initially rotating clockwise at
100 rpm. It then undergoes a constant counterclockwise angular
acceleration of 2.50 radians per square second for 5.00
seconds.
a) What is the magnitude of the initial angular velocity in units
of radians per second?
b) What are the magnitude and direction of the final angular
velocity of the flywheel at the end of the 5.00 second interval in
units of rad/s?
c) What is the magnitude of the net angle...

A wheel of diameter 0.35 m is rotating at 2700 rpm.
Calculate its angular velocity in radians per second. Use
'rad/s' for your units.
What is the linear speed of a point on the edge of this
wheel?
What is the linear acceleration of a point on the edge of this
wheel?

A flywheel slows from 655 to 400 rev/min while rotating through
20 revolutions.
What is the (constant) angular acceleration of the
flywheel?
α=α= rad/s2
How much time elapses during the 20 revolutions?
t=t= s
Calculate the rotational kinetic energy of a 13-kg motorcycle
wheel if its angular velocity is 141 rad/s and its inner radius is
0.280 m and outer radius 0.330 m.
KErot = J

An electric ceiling fan is rotating about a fixed axis with an
initial angular velocity magnitude of 0.290 rev/s . The magnitude
of the angular acceleration is 0.887 rev/s2 . Both the the angular
velocity and angular accleration are directed clockwise. The
electric ceiling fan blades form a circle of diameter 0.760 m
.
a.) Compute the fan's angular velocity magnitude after time 0.209 s
has passed. Express your answer numerically in revolutions
per second.
b.) Through how many revolutions...

A wheel rotates with a constant angular acceleration of 3.90
rad/s2. Assume the angular speed of the wheel is 2.05
rad/s at ti = 0.
(a) Through what angle does the wheel rotate between t
= 0 and t = 2.00 s? Give your answer in radians and
revolutions.
rad?
rev?
(b) What is the angular speed of the wheel at t = 2.00
s?
rad/s?
(c) What angular displacement (in revolutions) results while the
angular speed found in part...

A wheel rotates with a constant angular acceleration of 3.90
rad/s2. Assume the angular speed of the wheel is 1.55
rad/s at ti = 0.
(a) Through what angle does the wheel rotate between t
= 0 and t = 2.00 s? Give your answer in radians and
revolutions.
___________rad
___________ rev
(b) What is the angular speed of the wheel at t = 2.00
s?
__________rad/s
(c) What angular displacement (in revolutions) results while the
angular speed found in...

A flywheel turns through 34 rev as it slows from an angular
speed of 5.1 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 17 of the 34 revolutions?

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