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A marble is shot across a smooth wooden floor so that the marble both rotates about...
a hoop rotates about an axis through the center with an angular velocity of 70 rad/s...
a hoop rotates about an axis through the center with an angular velocity of 70 rad/s . if the rotational kinetic energy of the hoop is 500 j what is the angular momentum in si units
A plastic disk initially rotates freely and without friction on an icy surface, as shown in...
A plastic disk initially rotates freely and without friction on an icy surface, as shown in the figure. The disk completes 1.0 revolution every 0.75 seconds., The disk has a radius 0.035 m, a thickness o 0,0070 m, and a mass of 0.15 k seolution esery eled Bool Square face is 0.060 m by 0.060 m. 0.012 m rotating plastic icy surface (a) Calculate the initial angular velocity of the plastic disk in units of radians per second. (b) Calculate...
A cylinder with rotational inertia I1 = 3.2 kg · m2 rotates clockwise about a vertical...
A cylinder with rotational inertia I1 = 3.2 kg · m2 rotates clockwise about a vertical axis through its center with angular speed ω1 = 5.8 rad/s. A second cylinder with rotational inertia I2 = 1.2 kg · m2 rotates counterclockwise about the same axis with angular speed ω2 = 6.2 rad/s. If the cylinders couple so they have the same rotational axis, what is the angular speed of the combination (in rad/s)? What percentage of the original kinetic energy...
A ball with radius R rotates about the axis of symmetry horizontal to the surface with...
A ball with radius R rotates about the axis of symmetry horizontal to the surface with angular speed wo. At an instant of time, the rotating ball is placed on a rough surface and gets a push at height h < R above the surface (see the figure), so that its center of mass starts moving with the linear velocity vo to the right. What should the initial angular speed wo be, so that after some time the center of...
A disk with moment of inertia 9.15 × 10−3 kg∙m^2 initially rotates about its center at...
A disk with moment of inertia 9.15 × 10−3 kg∙m^2 initially rotates about its center at angular velocity 5.32 rad/s. A non-rotating ring with moment of inertia 4.86 × 10−3 kg∙m^2 right above the disk’s center is suddenly dropped onto the disk. Finally, the two objects rotate at the same angular velocity ?? about the same axis. There is no external torque acting on the system during the collision. Please compute the system’s quantities below. 1. Initial angular momentum ??...
Part Al Select the best answer of the following multiple choice questions (32 Points), just circle...
Part Al Select the best answer of the following multiple choice questions (32 Points), just circle your choices Question 1. A meter stick is pivoted at the 0.50-m line. A 6.0 kg object is hung from the 0.15-m line. Where should a 10.0 kg object be hung to achieve equilibrium (the meter stick oriented horizontal and motionless)? A) 0.06-m line B) 0.24-m line C) 0.46-m line D) 0.71-m line E) A 5.0 kg object cannot be placed anywhere on the...
A 30.0-kg crate is pushed across a rough floor by a horizontal force of 100 N...
A 30.0-kg crate is pushed across a rough floor by a horizontal force of 100 N of kinetic fiction between the crate and the floor is 0.100. If a total of 80.5 1 of work the crate, how far was it moved along the floor? done 21. Find the magnitude of the force ating on a 3.0-kg (assume all units in MKSo-ms cated at -2.0 m inside a potential 22. Which one of the following statements is false? More power...
A uniform rod rotates in a horizontal plane about a vertical axis through one end. The...
A uniform rod rotates in a horizontal plane about a vertical
axis through one end. The rod is 12.00 m long, weighs
20.00 N, and rotates at 350 rev/min clockwise when seen
from above. Calculate its rotational inertia about the axis of
rotation.
Tries 0/5
Calculate the angular momentum of the rod about that axis.
A man stands at the center of a platform that rotates without
friction with an angular speed of 1.2 rev/s. His arms are
outstretched, and...
A horizontal platform in the shape of a circular disk rotates on a frictionless bearing about...
A horizontal platform in the shape of a circular disk rotates on a frictionless bearing about a vertical axle through the center of the disk. The platform has a radius of 3.87m and a rotational inertia of 429kg.m^2 about the axis of rotation. A 78.4kg student walks slowly from the rim of the platform towards the center. The angular speed of the system is 2.95rad/s when the student starts at the rim. What is the angular speed when the student...
help on this question The marble is initially at rest at the top of the ramp...
help on this question
The marble is initially at rest at the top of the ramp (point A), a height h above the end of the ramp. When it reaches the bottom of the ramp, it has some speed v (which we need to know to predict the landing point on the floor). So, the initial potential energy of the marble at point A has been transformed into kinetic energy. Its important to recognize that its kinetic energy is in...
A plastic disk initially rotates freely and without friction on an icy surface, as shown in the figure. The disk completes 1.0 revolution every 0.75 seconds., The disk has a radius 0.035 m, a thickness o 0,0070 m, and a mass of 0.15 k seolution esery eled Bool Square face is 0.060 m by 0.060 m. 0.012 m rotating plastic icy surface (a) Calculate the initial angular velocity of the plastic disk in units of radians per second. (b) Calculate...
A ball with radius R rotates about the axis of symmetry horizontal to the surface with angular speed wo. At an instant of time, the rotating ball is placed on a rough surface and gets a push at height h < R above the surface (see the figure), so that its center of mass starts moving with the linear velocity vo to the right. What should the initial angular speed wo be, so that after some time the center of...
Part Al Select the best answer of the following multiple choice questions (32 Points), just circle your choices Question 1. A meter stick is pivoted at the 0.50-m line. A 6.0 kg object is hung from the 0.15-m line. Where should a 10.0 kg object be hung to achieve equilibrium (the meter stick oriented horizontal and motionless)? A) 0.06-m line B) 0.24-m line C) 0.46-m line D) 0.71-m line E) A 5.0 kg object cannot be placed anywhere on the...
A 30.0-kg crate is pushed across a rough floor by a horizontal force of 100 N of kinetic fiction between the crate and the floor is 0.100. If a total of 80.5 1 of work the crate, how far was it moved along the floor? done 21. Find the magnitude of the force ating on a 3.0-kg (assume all units in MKSo-ms cated at -2.0 m inside a potential 22. Which one of the following statements is false? More power...
A uniform rod rotates in a horizontal plane about a vertical
axis through one end. The rod is 12.00 m long, weighs
20.00 N, and rotates at 350 rev/min clockwise when seen
from above. Calculate its rotational inertia about the axis of
rotation.
Tries 0/5
Calculate the angular momentum of the rod about that axis.
A man stands at the center of a platform that rotates without
friction with an angular speed of 1.2 rev/s. His arms are
outstretched, and...
help on this question
The marble is initially at rest at the top of the ramp (point A), a height h above the end of the ramp. When it reaches the bottom of the ramp, it has some speed v (which we need to know to predict the landing point on the floor). So, the initial potential energy of the marble at point A has been transformed into kinetic energy. Its important to recognize that its kinetic energy is in...
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