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According to conservation of angular momentum...
His angular velocity ( DECREASES )
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When a man on a frictionless rotating stool extends his arms horizontally, his angular velocity: increases...
A student sits on a rotating stool holding two2.7-kg objects. When his arms are extended horizontally, the objects are...
A student sits on a rotating stool holding two2.7-kg objects. When his arms are extended horizontally, the objects are 1.0 m from the axis of rotation and he rotates with an angular speed of 0.75 rad/s. The moment of inertia of the student plus stool is 3.0 kg
A man stands on a frictionless platform that is rotating with an angular speed of 3.5...
A man stands on a frictionless platform that is rotating with an angular speed of 3.5 rad/s; his arms are outstretched and he holds a weight in each hand. With his hands in this position the rotational inertial of the system of man, weights, and platform is 6.0 kg*m2. 1. If by moving the weights the man decreases the rotational inertial of the system to 3.5 kg*m2, what is the resulting angular speed of the platform? 2. What is the...
A student sits on a rotating stool holding two 3.2-kg objects. When his arms are extended...
A student sits on a rotating stool holding two 3.2-kg objects. When his arms are extended horizontally, the objects are 1.0 m from the axis of rotation and he rotates with an angular speed of 0.75 rad/s. The moment of inertia of the student plus stool is 3.0 kg · m2 and is assumed to be constant. The student then pulls in the objects horizontally to 0.23 m from the rotation axis. a. Find the new angular speed of the...
A student sits on a rotating stool holding two 2.9-kg objects. When his arms are extended...
A student sits on a rotating stool holding two 2.9-kg objects. When his arms are extended horizontally, the objects are 1.0 m from the axis of rotation and he rotates with an angular speed of 0.75 rad/s. The moment of inertia of the student plus stool is 3.0 kg · m2 and is assumed to be constant. The student then pulls in the objects horizontally to 0.45 m from the rotation axis. (a) Find the new angular speed of the...
A student sits on a freely rotating stool holding two weights, each of mass 4 kg.. When his arms are extended horizonta...
A student sits on a freely rotating stool holding two weights, each of mass 4 kg.. When his arms are extended horizontally, the weights are 1.1 m from the axis of rotation and he rotates with an angular speed of 0.9 rad/s. The moment of inertia of the student plus stool is 3.0 kg-m2 and is assumed to be constant. The student pulls the weights inward horizontally to a position 0.4 m from the rotation axis. Find the new angular...
A student, sitting on a stool, holds masses in each hand. When his arms are extended,...
A student, sitting on a stool, holds masses in each hand. When his arms are extended, the total rotational inertia of the system is 5.6 kg·m2. When he pulls his arms in close to his body, he reduces the total rotational inertia to 1.4 kg·m2. When he is rotating with his hands held close to his body, his rotational velocity is 9 RPM. If there are no external torques, calculate the new rotational velocity of the system when he extends...
Please explain your results sits on a rotating stool holding two 3.2-kg objects. When his arms...
Please explain your results
sits on a rotating stool holding two 3.2-kg objects. When his arms are extended horizontally, the objects are 1.0 m from the axis of rotation and he rotates with an A student ang lar speed of 0.75 rad/s. The 0.45 m from the rotation axis. moment of inertia of the student plus stool is 3.0 kg m2 and is assumed to be constant. The student then pulls in the objects horizontally to (a) Find the new...
would you please solve as much as you can since their short questions? 22. Four identical...
would you please solve as much as you can since their short
questions?
22. Four identical balls of mass 0.6 kg are fastened to a massless rod whose total length is 1 m. The rod spins at 8 rad/s. The moment of inertia of this system, in units of kg m', is A) 0.61 D) 0.93 C) 1.81 B) 0.72 E) 1.22 A meter stick on a horizontal frictionless table top can rotate about the 80-cm mark. A 10 N...
A physics professor sits on a stool mounted to a low friction rotating platform while holding...
A physics professor sits on a stool mounted to a low friction rotating platform while holding a 2.8 kg mass in each hand. When his arms are fully extended away from his body, the masses are each 1.15 m from the central vertical axis of rotation. A helpful student pushes on the masses as the professor begins spinning faster and faster until the professor rotates with an angular velocity of 0.9 rad/s. The moment of inertia of the professor and...
You stand on a frictionless platform that is rotating at 1.3 rev/s. Your arms are outstretched,...
You stand on a frictionless platform that is rotating at 1.3 rev/s. Your arms are outstretched, and you hold a heavy weight in each hand. The moment of inertia of you, the extended weights, and the platform is 9.1 kg*m^2. When you pull the weights in toward your body, the moment of inertia decreases to 4.9 kg*m^s. a. What is the resulting angular speed of the platform? b. What is the change in kinetic energy of the system? c. Where...
Please explain your results
sits on a rotating stool holding two 3.2-kg objects. When his arms are extended horizontally, the objects are 1.0 m from the axis of rotation and he rotates with an A student ang lar speed of 0.75 rad/s. The 0.45 m from the rotation axis. moment of inertia of the student plus stool is 3.0 kg m2 and is assumed to be constant. The student then pulls in the objects horizontally to (a) Find the new...
would you please solve as much as you can since their short
questions?
22. Four identical balls of mass 0.6 kg are fastened to a massless rod whose total length is 1 m. The rod spins at 8 rad/s. The moment of inertia of this system, in units of kg m', is A) 0.61 D) 0.93 C) 1.81 B) 0.72 E) 1.22 A meter stick on a horizontal frictionless table top can rotate about the 80-cm mark. A 10 N...
A physics professor sits on a stool mounted to a low friction rotating platform while holding a 2.8 kg mass in each hand. When his arms are fully extended away from his body, the masses are each 1.15 m from the central vertical axis of rotation. A helpful student pushes on the masses as the professor begins spinning faster and faster until the professor rotates with an angular velocity of 0.9 rad/s. The moment of inertia of the professor and...
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