A motor spins up from rest to an angular velocity of 265 rad/s in 3 s....
A motor spins up from rest to an angular velocity of 265 rad/s in 3 s. Treat the motor as a cylinder of mass 3 kg and radius 0.3 meters. Find the rotational work done by the motor after it rotates though 12 revolutions.
Homework Answers
Here it is mentioned that motor as a cylinder so I am treating it as a solid cylinder ( like a big disc) Hence i am using a formula for moment of inertia of a solid cylinder of mass m and radius r is given by I = (1/2) mass x radius 2
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A motor spins up from rest to an angular velocity of 265 rad/s
in 3 s....
A motor spins gear A with an angular velocity of ct rad/s cc, where c is...
A motor spins gear A with an angular velocity of ct rad/s cc,
where c is constant and t is in seconds. gear a meshes with gear b,
both gears are fixed at center. at t=3 what is angular accleration
of gear b.
200nn C:2.6 65mm
4.) A car motor rotates at 84 rad/s in idle mode. When shut off, its angular...
4.) A car motor rotates at 84 rad/s in idle mode. When shut off, its angular acceleration is --20 rad/s2 (a) What is the angular velocity after 1.0 s? (b) How long will it take for the motor to completely stop? (C) How many revolutions does the motor make before stopping after it is turned off?
A motor provides the torque necessary to keep a gear turning at constant angular velocity, overcoming...
A motor provides the torque necessary to keep a gear turning at
constant angular velocity, overcoming friction between the gear and
the axle.
The gear can be modeled as a disk, with mass 2 kg, and radius
rg = 0.2 m. The force of friction can be
modeled as a single force, acting at the outer edge of the axle, at
position ra = 0.02 meters, with force of
fk = 10 N.
a) What is the magnitude of the...
If the motor turns gear A with an angular velocity of 5 rad/s, the angular velocity...
If the motor turns gear A with an angular velocity of 5 rad/s,
the angular velocity of gear D will be
Question Completion Status: 1 2 3 4 5 Question 2 6 7 8 9 10 11 12 13 14 15 16 2 points If the motor turns gear A with an angular velocity of 5 rad/s, the angular velocity of gear D will be 100 mm 50 mm 40 mm 100 mm
A Ferris wheel rotates at an angular velocity of 0.26 rad/s. Starting from rest, it reaches...
A Ferris wheel rotates at an angular velocity of 0.26 rad/s. Starting from rest, it reaches its operating speed with an average angular acceleration of 0.034 rad/s2. How long does it take the wheel to come up to operating speed?
1. The linkage shown is made of two 1.0-meter-long rods. Each rod has a mass of 5 kg. At the instant shown each rod has an angular velocity of -10 rad/s. Gravity acts toward the bottom of the...
1. The linkage shown is made of two 1.0-meter-long rods. Each rod has a mass of 5 kg. At the instant shown each rod has an angular velocity of -10 rad/s. Gravity acts toward the bottom of the page. What's the acceleration of the point where the 500 N force is applied? 500 N A disc of radius 0.3 m spins at a constant rate of 50 rad/s about its axis (directed toward the ottom of the page), while the...
Can i get help proving the answer please and thank you! 8) A 3 kg solid...
Can i get help proving the
answer please and thank you!
8) A 3 kg solid sphere with a radius of 0.1 meters and a 5 kg cylinder with a radius of 0.2 meters are both at rest at the top of an incline plane with a height of 4 meters. A solid sphere has a moment of inertia I =-MR2. A solid cylinder has a moment of inertia about its central axis of I--MR". 2 If they are both...
QUESTION 5 A figure skater is spinning with an angular velocity of Il rad/s. She then...
QUESTION 5 A figure skater is spinning with an angular velocity of Il rad/s. She then comes to a stop over a brief period of time. During this time, her angular displacement is 5.9 rad. Determine her average angular acceleration, in SI units, with 3 or more significant figures QUESTION 6 Suppose you exert a force of 171 N tangential to a 0.26 m radius 83 kg grindstone (a solid disk). What is the angular acceleration if there is an...
11. A motor spins a disk (Idisk = 24.2 kg*m2) with a torque of 39 N*m,...
11. A motor spins a disk (Idisk = 24.2 kg*m2) with a torque of 39 N*m, and a 18 N frictional force acts on the disk at a radius of 1.3 m. Attached to the disk at a radius of 1.8 m is a 10 kg mass. What is the magnitude of the angular acceleration in rad/s2 of the system? 12. A 1.4-kg projectile is fired from level ground. The vertical component of the initial velocity is 83 m/s and...
is standing at 3 m from the axis, their angular velocity is 1 rad/s. What would...
is standing at 3 m from the axis, their angular velocity is 1 rad/s. What would be their angular velocity if the ki moved to the center of the platform? 11. Consider a kid with mass 20 kg standing on a merry-go-round that has rotational inertia of 200 kg m. When t Setup:
A motor spins gear A with an angular velocity of ct rad/s cc,
where c is constant and t is in seconds. gear a meshes with gear b,
both gears are fixed at center. at t=3 what is angular accleration
of gear b.
200nn C:2.6 65mm
4.) A car motor rotates at 84 rad/s in idle mode. When shut off, its angular acceleration is --20 rad/s2 (a) What is the angular velocity after 1.0 s? (b) How long will it take for the motor to completely stop? (C) How many revolutions does the motor make before stopping after it is turned off?
A motor provides the torque necessary to keep a gear turning at
constant angular velocity, overcoming friction between the gear and
the axle.
The gear can be modeled as a disk, with mass 2 kg, and radius
rg = 0.2 m. The force of friction can be
modeled as a single force, acting at the outer edge of the axle, at
position ra = 0.02 meters, with force of
fk = 10 N.
a) What is the magnitude of the...
If the motor turns gear A with an angular velocity of 5 rad/s,
the angular velocity of gear D will be
Question Completion Status: 1 2 3 4 5 Question 2 6 7 8 9 10 11 12 13 14 15 16 2 points If the motor turns gear A with an angular velocity of 5 rad/s, the angular velocity of gear D will be 100 mm 50 mm 40 mm 100 mm
1. The linkage shown is made of two 1.0-meter-long rods. Each rod has a mass of 5 kg. At the instant shown each rod has an angular velocity of -10 rad/s. Gravity acts toward the bottom of the page. What's the acceleration of the point where the 500 N force is applied? 500 N A disc of radius 0.3 m spins at a constant rate of 50 rad/s about its axis (directed toward the ottom of the page), while the...
Can i get help proving the
answer please and thank you!
8) A 3 kg solid sphere with a radius of 0.1 meters and a 5 kg cylinder with a radius of 0.2 meters are both at rest at the top of an incline plane with a height of 4 meters. A solid sphere has a moment of inertia I =-MR2. A solid cylinder has a moment of inertia about its central axis of I--MR". 2 If they are both...
QUESTION 5 A figure skater is spinning with an angular velocity of Il rad/s. She then comes to a stop over a brief period of time. During this time, her angular displacement is 5.9 rad. Determine her average angular acceleration, in SI units, with 3 or more significant figures QUESTION 6 Suppose you exert a force of 171 N tangential to a 0.26 m radius 83 kg grindstone (a solid disk). What is the angular acceleration if there is an...
is standing at 3 m from the axis, their angular velocity is 1 rad/s. What would be their angular velocity if the ki moved to the center of the platform? 11. Consider a kid with mass 20 kg standing on a merry-go-round that has rotational inertia of 200 kg m. When t Setup:
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