A man stands on a platform that is rotating (without friction) with an angular speed of...
A man stands on a platform that is rotating (without friction) with an angular speed of 2.1 rev/s; his arms are outreached and he holds a weight in each hand. The rotational inertia of the system of man, weights, and platform about the central axis is 15.00 kg m2. If by moving the weights the man decreases the rotational inertia of the system to 9.90 kg m2, a) what is the resulting angular speed of the platform?(rad/s) b) What is the ratio of the new kinetic energy of the system to the original kinetic energy?
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A man stands on a platform that is rotating (without friction)
with an angular speed of...
A man stands on a platform that is rotating (without friction) with an angular speed of...
A man stands on a platform that is rotating (without friction) with an angular speed of 1.29 rev/s; his arms are outstretched and he holds a brick in each hand. The rotational inertia of the system consisting of the man, bricks, and platform about the central axis is 4.66 kg.m^2. If by moving the bricks the man decreases the rotational inertia of the system to 1.03 kg-m^2, (a) what is the resulting angular speed of the platform and (b) what...
A man stands on a platform that is rotating (without friction) with an angular speed of...
A man stands on a platform that is rotating (without friction) with an angular speed of 1.76 rev/s; his arms are outstretched and he holds a brick in each hand. The rotational inertia of the system consisting of the man, bricks, and platform about the central axis is 7.65 kg·m2. If by moving the bricks the man decreases the rotational inertia of the system to 2.27 kg·m2, (a) what is the resulting angular speed of the platform and (b) what...
A man stands on a platform that is rotating (without friction) with an angular speed of...
A man stands on a platform that is rotating (without friction) with an angular speed of 1.30 rev/s; his arms are outstretched and he holds a brick in each hand. The rotational inertia of the system consisting of the man, bricks, and platform about the central axis is 4.34 kg·m2. If by moving the bricks the man decreases the rotational inertia of the system to 2.26 kg·m2, (a) what is the resulting angular speed of the platform and (b) what...
A man stands on a platform that is rotating (without friction) with an angular speed of...
A man stands on a platform that is rotating (without friction) with an angular speed of 1.61 rev/s; his arms are outstretched and he holds a brick in each hand. The rotational inertia of the system consisting of the man, bricks, and platform about the central axis is 7.06 kg·m2. If by moving the bricks the man decreases the rotational inertia of the system to 1.96 kg·m2, (a) what is the resulting angular speed of the platform and (b) what...
SOS A man stands on a platform that is rotating (without friction) with an angular speed...
SOS
A man stands on a platform that is rotating (without friction) with an angular speed of 2.35 rev/s; his arms are outstretched and he holds a brick in each hand. The rotational inertia of the system consisting of the man, bricks, and platform about the central axis is 5.13 kg.m2. If by moving the bricks the man decreases the rotational inertia of the system to 1.28 kg.mp, (a) what is the resulting angular speed of the platform and (b)...
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...
Chapter 11, Problem 045 Your answer is partially correct. Try again. A man stands on a...
Chapter 11, Problem 045 Your answer is partially correct. Try again. A man stands on a platform that is rotating (without friction) with an angular speed of 1.80 rev/s; his arms are outstretched and he holds a brick in each hand. The rotational inertia of the system consisting of the man, bricks, and platform about the central axis is 7.45 kg.m2. If by moving the bricks the man decreases the rotational inertia of the system to 1.78 kg.m?, (a) what...
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...
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 person of mass 55 kg stands at the center of a rotating merry-go-round platform of...
A person of mass 55 kg stands at the center of a rotating merry-go-round platform of radius 3.4 m and moment of inertia 670 kg · m2. The platform rotates without friction with angular velocity 2.0 rad/s. The person walks radially to the edge of the platform. (a) Calculate the angular velocity when the person reaches the edge. ......................... rad/s (b) Calculate the rotational kinetic energy of the system of platform plus person before the person's walk. ..........................J (c) Calculate...
A man stands on a platform that is rotating (without friction) with an angular speed of 1.29 rev/s; his arms are outstretched and he holds a brick in each hand. The rotational inertia of the system consisting of the man, bricks, and platform about the central axis is 4.66 kg.m^2. If by moving the bricks the man decreases the rotational inertia of the system to 1.03 kg-m^2, (a) what is the resulting angular speed of the platform and (b) what...
SOS
A man stands on a platform that is rotating (without friction) with an angular speed of 2.35 rev/s; his arms are outstretched and he holds a brick in each hand. The rotational inertia of the system consisting of the man, bricks, and platform about the central axis is 5.13 kg.m2. If by moving the bricks the man decreases the rotational inertia of the system to 1.28 kg.mp, (a) what is the resulting angular speed of the platform and (b)...
Chapter 11, Problem 045 Your answer is partially correct. Try again. A man stands on a platform that is rotating (without friction) with an angular speed of 1.80 rev/s; his arms are outstretched and he holds a brick in each hand. The rotational inertia of the system consisting of the man, bricks, and platform about the central axis is 7.45 kg.m2. If by moving the bricks the man decreases the rotational inertia of the system to 1.78 kg.m?, (a) what...
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...
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