2. A 4.2-m-diameter merry-go-round is rotating freely with an angular velocity of 0.80 rad/s. Its total moment of inertia is 1360 kgm², Four people standing on the ground, each of mass 65 kg, suddenly step onto the edge of the merry-go-round. (a) What is the angular velocity of the merry-go-round now? (b) What if the people were on it initially and then jumped off in a radial direction (relative to the merry-go-round)?

2. A 4.2-m-diameter merry-go-round is rotating freely with an angular velocity of 0.80 rad/s. Its total moment of inertia is 1360 kgm², Four people standing on the ground, each of mass 65 kg, suddenly step onto the edge of the merry-go-round. (a) What is the angular velocity of the merry-go-round now? (b) What if the people were on it initially and then jumped off in a radial direction (relative to the merry-go-round)?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Concept explainers

Torque

Torque is the rotational equivalent of linear force in physics and mechanics. Based on the course of study, it is also known as the moment of force, rotational force, or turning effect.

Question

physical accomplish change by starting
to pull arms and extend the arms into
center of the body.
2. A 4.2-m-diameter merry-go-round is rotating freely with an
angular velocity of 0.80 rad/s. Its total moment of inertia is 1360
kgm², Four people standing on the ground, each of mass 65 kg,
suddenly step onto the edge of the merry-go-round. (a) What is
the angular velocity of the merry-go-round now? (b) What if the
people were on it initially and then jumped off in a radial direction
(relative to the merry-go-round)?
Conservation of Ansular momentum
L₁ = Izwi Le= If we Hi Wi= If wf
F₁ = 1,360 k8m² wi=0.80 caals
Li-Le
If= I₁ + Inerta = 1₂360 KS² +1,147Kg²
#2507 KS²

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