The angular momentum vector of this wheel points: ( a ) To the right on the...
The angular momentum vector of this wheel points:
( a ) To the right on the top of the wheel, and the the left on the bottom
( b ) Into the page
( c ) Out of the page
( d ) Up
( e ) Down
( f ) Not enough information is given
Homework Answers
The direction of angular velocity ω size and angular momentum L are defined to be the direction in which the thumb of your right hand points when you curl your fingers in the direction of the disk's rotation .
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The angular momentum vector of this wheel points:
( a ) To the right on the...
Tutorial: Angular Momentum and Torque III. Angular Momentum The angular momentum of a point particle is...
Tutorial: Angular Momentum and Torque III. Angular Momentum The angular momentum of a point particle is defined by: L = ixp. Here, is a vector that points from the point of rotation (or point around which the angular momentum is calculated) to the location of the particle and p = mb is the linear momentum of the particle. A Your little brother Joey is playing with his toy airplane. The airplane is tied to a string and its motor makes...
need to know these two angular momentum and torque questions 19.) A wheel is designed by...
need to know these two angular momentum and torque questions
19.) A wheel is designed by placing two thin rods, each with a mass of 20 kg and a length of 3.0m, inside a thin ring with a mass of 10 kg and a radius of 1.5m. A small point mass of 1.0kg is attached to one of the thin rods at 0.75m from the center. 1.5m a.) b.) Calculate the total moment of inertia of this wheel. The wheel...
Angular Momentum Vector and Precession
A disk with mass m = 6.1 kg and radius R = 0.39 m hangs from a rope attached to the ceiling. The disk spins on its axis at a distance r = 1.51 m from the rope and at a frequency f = 19.8 rev/s (with a direction shown by the arrow).1)What is the magnitude of the angular momentum of the spinning disk?2)What is the torque due to gravity on the disk? if found this to be --> 90.2678...
4) (8 total points) Multiple choice questions i) (2 points) 3 long parallel current carrying wires...
4) (8 total points) Multiple choice questions i) (2 points) 3 long parallel current carrying wires have currents equal in magnitude but in the directions as shown. What direction is the magnetic force acting on the leftmost wire? a. Out of page b. Into page c. Up (t) d. Down (J) e. Left f. Right g. No Force ii) (2 points) A bearm of protons is accelerated to v-2.0x10° msec. They then enter a velocity selector with B-field of the...
The angular momentum vector of a precessing gyroscope sweeps out a cone as shown in the...
The angular momentum vector of a precessing gyroscope sweeps out a cone as shown in the figure below. The angular speed of the tip of the angular momentum vector, called its precessional frequency, is given by w, = t/L, where t is the magnitude of the torque on the gyroscope and L is the magnitude of its angular momentum. In the motion called precession of the equinoxes, the Earth's axis of rotation precesses about the perpendicular to its orbital plane...
This is an interesting phenomenon, and a very difficult one to explain. Both torque and angular...
This is an interesting phenomenon, and a very difficult one to explain. Both torque and angular momentum must be treated as vectors. Torque causes angular momentum to change according to the following equation: delta L rightarrow = rightarrow delta T To use this equation the direction of a torque vector must be defined. Follow the moment arm with the fingers of your right hand. Then turn your fingers to follow the force. As you do this, your thumb will point...
6. Angular Momentum and Torque on a Meteor A meteor enters Earth's atmosphere and is observed...
6. Angular Momentum and Torque on a Meteor A meteor enters Earth's atmosphere and is observed by someone on the ground before it burns up in the atmosphere. The vector 25 m i +25 m j gives the position of the meteor with respect to observer. At the instant the observer sees the meteor, it has linear momentum p 1.5 kg -2.0) m/s 3 and it is accelerating at a constant rate of 2.0 m/s(-3) along its path, which for...
If an electron has a velocity to the left and there is an external magnetic field...
If an electron has a velocity to the left and there is an external magnetic field out of the page, what direction is the magnetic force on the charge? a. Left b. Right c. Up (towards the top of the page) d. Down (towards the bottom of the page) e. There is no magnetic force
Four electric currents, equal in magnitude are arranged at the corners of a square as shown...
Four electric currents, equal in magnitude are arranged at the corners of a square as shown in the figure. b a Two currents go into the page, and two are pointing out of the page. Point a is at the center of the square, and points b and c are in the middle of two of the sides. What is the direction of the magnetic field at point a? To the left. To the right. Down (to the bottom of...
Tutorial: Angular Momentum and Torque III. Angular Momentum The angular momentum of a point particle is defined by: L = ixp. Here, is a vector that points from the point of rotation (or point around which the angular momentum is calculated) to the location of the particle and p = mb is the linear momentum of the particle. A Your little brother Joey is playing with his toy airplane. The airplane is tied to a string and its motor makes...
need to know these two angular momentum and torque questions
19.) A wheel is designed by placing two thin rods, each with a mass of 20 kg and a length of 3.0m, inside a thin ring with a mass of 10 kg and a radius of 1.5m. A small point mass of 1.0kg is attached to one of the thin rods at 0.75m from the center. 1.5m a.) b.) Calculate the total moment of inertia of this wheel. The wheel...
4) (8 total points) Multiple choice questions i) (2 points) 3 long parallel current carrying wires have currents equal in magnitude but in the directions as shown. What direction is the magnetic force acting on the leftmost wire? a. Out of page b. Into page c. Up (t) d. Down (J) e. Left f. Right g. No Force ii) (2 points) A bearm of protons is accelerated to v-2.0x10° msec. They then enter a velocity selector with B-field of the...
The angular momentum vector of a precessing gyroscope sweeps out a cone as shown in the figure below. The angular speed of the tip of the angular momentum vector, called its precessional frequency, is given by w, = t/L, where t is the magnitude of the torque on the gyroscope and L is the magnitude of its angular momentum. In the motion called precession of the equinoxes, the Earth's axis of rotation precesses about the perpendicular to its orbital plane...
This is an interesting phenomenon, and a very difficult one to explain. Both torque and angular momentum must be treated as vectors. Torque causes angular momentum to change according to the following equation: delta L rightarrow = rightarrow delta T To use this equation the direction of a torque vector must be defined. Follow the moment arm with the fingers of your right hand. Then turn your fingers to follow the force. As you do this, your thumb will point...
6. Angular Momentum and Torque on a Meteor A meteor enters Earth's atmosphere and is observed by someone on the ground before it burns up in the atmosphere. The vector 25 m i +25 m j gives the position of the meteor with respect to observer. At the instant the observer sees the meteor, it has linear momentum p 1.5 kg -2.0) m/s 3 and it is accelerating at a constant rate of 2.0 m/s(-3) along its path, which for...
Four electric currents, equal in magnitude are arranged at the corners of a square as shown in the figure. b a Two currents go into the page, and two are pointing out of the page. Point a is at the center of the square, and points b and c are in the middle of two of the sides. What is the direction of the magnetic field at point a? To the left. To the right. Down (to the bottom of...
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