Question
In: Physics
A 27 N-m torque is applied to a flywheel that rotates about a fixed axis. The...
A 27 N-m torque is applied to a flywheel that rotates about a fixed axis. The flywheel has a moment of inertia of 33 kg/m2. If the flywheel is initially at rest, what is its angular velocity in rad/s after it has turned through 5 revolutions?
Solutions
genius_generous answered 2 years agoRelated Solutions
A torque of 36.2 N · m is applied to an initially motionless wheel which rotates...
A torque of 36.2 N · m is applied to an initially motionless
wheel which rotates around a fixed axis. This torque is the result
of a directed force combined with a friction force. As a result of
the applied torque the angular speed of the wheel increases from 0
to 10.1 rad/s. After 6.20 s the directed force is removed, and the
wheel comes to rest 59.4 s later.
From the time the directed force is initially applied, how...
A torque of 36.2 N · m is applied to an initially motionless wheel which rotates...
A torque of 36.2 N · m is applied to an initially motionless
wheel which rotates around a fixed axis. This torque is the result
of a directed force combined with a friction force. As a result of
the applied torque the angular speed of the wheel increases from 0
to 9.5 rad/s. After 6.10 s the directed force is removed, and the
wheel comes to rest 60.2 s later.
A- What is the wheel's moment of inertia
B- What...
A net torque of 2.84 N*m is applied on a solid sphere for 5.32 seconds. If...
A net torque of 2.84 N*m is applied on a solid sphere for 5.32
seconds. If the solid sphere has a moment of inertia of 2.96 kg*m^2
and it starts from rest, what is its final rotational kinetic
energy?
A disk (radius 95.8 cm] rotates about a fixed axis through its center of mass and...
A disk (radius 95.8 cm] rotates about a fixed axis through its
center of mass and perpendicular to the disk. At t = 0 the
disk is rotating at frequency 6.47 Hz, and it accelerates uniformly
to frequency 73.8 Hz after spinning through 38.4 revolutions. Find
the angular acceleration of the disk, in rad/s2.
The wheel of a cart has radius 53.9 cm. How many revolutions
will it make if the cart goes 2.79 km?
An electric fan is turned...
a uniform spherical shell of mass M and radius R rotates about a vertical axis on...
a uniform spherical shell of mass M and radius R rotates about a
vertical axis on frictionless bearing. A massless cord passes
around the equator of the shell, over a pulley of rotational
inertia I and radius r, and is attached to a small object of mass
m. There is no friction on the pulley's axle; the cord does not
slip on the pulley. What is the speed of the object after it has
fallen a distance h from rest?...
Torque can be calculated by multiplying the force (N) applied at 90° to the lever arm at a distance (m) from the pivot point (point of rotation)
Torque can be calculated by multiplying the force (N) applied at 90° to the lever arm at a distance (m) from the pivot point (point of rotation), the compound SI unit for the torque is N⋅m. If the force (at 90° to the lever arm) applied is 15 N and it is applied at 2.0 m from the pivot point (point of rotation), what is the torque on the lever?
A disk rotates about an axis through its center. Point A is located on its rim...
A disk rotates about an axis through its center. Point A is
located on its rim and point B is located exactly one fourth of the
way from the center toward the rim. What is the ratio of the
angular velocity ?A to that of ?B, and the tangential velocity vA
to that of vB? the angular velocity ?A to that of ?B the tangential
velocity vA to that of vB
A circular disk rotates about its axis with angular velocity w. The disk is made of...
A circular disk rotates about its axis with angular velocity w.
The disk is made of metal with conductivity g and thickness t.The
rotating disk os pa;lced the pole faces of a magnet which produces
a uniform magnetic field B over a small square area of size
a2 at the average distance r from the axis where B is
perpendicular to the disk, Show that the approximate torque on the
disk is B2a2r2wgt/2.
The average net torque Justin exerts on a discus about its axis of spin is 100...
The average net torque Justin exerts on a discus about its axis
of spin is 100 Nm during a throw. The mass of the discus is 2 kg,
and its radius of gyration about the spin axis is 12 cm. If the
discus is not spinning at the start of Justins throwing action, and
the throwing action lasts for 0.20 s, how fast is the discus
spinning when Justin releases it?
A 90-turn square coil of side 20.0 cm rotates about a vertical axis at ω =...
A 90-turn square coil of side 20.0 cm rotates about a vertical
axis at ω = 1.65 103 rev/min as indicated in the figure below. The
horizontal component of Earth's magnetic field at the coil's
location is equal to 2.00 10-5 T.
(a) Calculate the maximum emf induced in the coil by this
field.
in mV
(b) What is the orientation of the coil with respect to the
magnetic field when the maximum emf occurs?
a.The plane of the coil...
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