A 3.5-m-diameter merry-go-round with rotational inertia 120 kg · m² is spinning freely at 0.60 rev/s . Four 25-kg children sit suddenly on the edge of the merry-go-round. Express your answer using two significant figures. V = 0.17 rev/s Submit Previous Answers All attempts used; correct answer displayed Part B Determine the total energy lost to friction between the children and the merry-go-round. Express your answer using two significant figures.

A 3.5-m-diameter merry-go-round with rotational inertia 120 kg · m² is spinning freely at 0.60 rev/s . Four 25-kg children sit suddenly on the edge of the merry-go-round. Express your answer using two significant figures. V = 0.17 rev/s Submit Previous Answers All attempts used; correct answer displayed Part B Determine the total energy lost to friction between the children and the merry-go-round. Express your answer using two significant figures.

University Physics Volume 3

17th Edition

ISBN:9781938168185

Author:William Moebs, Jeff Sanny

Publisher:William Moebs, Jeff Sanny

Chapter2: Geometric Optics And Image Formation

Section: Chapter Questions

Problem 5CQ: Is it necessary to project a real image onto a screen to see it?

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Concept explainers

Applications Of Reflection Of Light

When a light ray (termed as the incident ray) hits a surface and bounces back (forms a reflected ray), the process of reflection of light has taken place.

Sign Convention for Mirrors

A mirror is made of glass that is coated with a metal amalgam on one side due to which the light ray incident on the surface undergoes reflection and not refraction.

Question

It doesn't accept my answer for the 1st picture, I don't know if it is correct.

The second image question 2, says answer is incorrect.

A 3.5-m-diameter merry-go-round with rotational
inertia 120 kg · m² is spinning freely at 0.60 rev/s
. Four 25-kg children sit suddenly on the edge of
the merry-go-round.
Express your answer using two significant figures.
V = 0.17 rev/s
Submit
Previous Answers
All attempts used; correct answer displayed
Part B
Determine the total energy lost to friction between the children and the merry-go-round.
Express your answer using two significant figures.

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