Question: A person stands hands at his side, on platform that is rotating at a rate of 1.30 rev/s. If he raises his arms to a

A person stands hands at his side, on platform that is rotating at a rate of 1.30 rev/s. If he raises his arms to a horizontal position Fig. 8-48, the speed of rotation decreases to 0.80 rev/s.
(a) Why?
(b) By what factor has his moment of inertia changed?

Step by Step Solution

★★★★★

3.47 Rating (176 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

a Consider the person and platform a system for angula... View full answer

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Document Format (1 attachment)

P-M-R-M (156).docx

120 KBs Word File

Students Have Also Explored These Related Mechanics Questions!

A wheel is rotating at a rate of 2.0 revolutions every 3.0 s. Through what angle, in radians, does the wheel rotate in 1.0 s?

A man stands on a frictionless platform that is rotating with an angular speed of 1.5 rev/s. His arms are outstretched, and he holds a heavy weight in each hand. The moment of inertia of the man, the...

Suppose that a merry-go-round is rotating at the rate of 10 rev/min. a. Express this rotational velocity in rev/s. b. Express this rotational velocity in rad/s

3 . A system consists of a real spring ( mass m ) , the Earth, a person ( mass M ) , and an inclined surface ( angle relative to horizontal ) with friction, on which the person and spring are...

Which is an example of an obsession? A person stands on a street corner, warning people of the coming alien invasion A person fails to shower for weeks at a time You cannot pay attention in class...

The steps of a flight of stairs are 21.0 cm high (vertically). Part A If a 66.0-kg person stands with both feet on the same step, what is the gravitational potential energy of this person on the...

Math 221 Discrete Mathematics UOPX Make sure all of the are fresh work with proper citation APA format, no used work will be accepted thanks so much. To be substantive, in addition to meeting the...

Math 221 Discrete Mathematics UOPX I need week 5 help Questions are listed below Make sure all of them are fresh work with proper citation APA format; no used work will be accepted thanks so much....

A person with mass mp = 83.0 kg stands on a spinning platform disk that has a radius of R = 1.50 m and mass ma = 185 kg. Initially, the disk spins at an angular speed of co = 2.10 rad/s. Then, the...

The Global Leadership of Carlos Ghosn at Nissan John P Millikin Dean Fu did not try to learn too much .ibout Japan before coming, because I ditin't want to have too many prcconcci\\cd itfciis, I...

In a series RLC circuit connected to an ac generator whose maximum emf is 200 V, the resistance is 60 and the capacitance is 8.0 F. The inductance can be varied from 8.0 mH to 40.0 mH by the...

Exercise 1, Exercise 6 and 7 below 7. Refer to Exhibit 9-3. This exhibit presents P/E ratios for public companies in various countries. What factors might explain the differences in P/E ratios that...

TotsPoses, a profit-maximising business, is the only photography business in town that specialises in portraits of small children. George, who owns and runs TotsPoses, expects to encounter an average...

Green Pastures is a 400-acre farm on the outskirts of the Kentucky Bluegrass, specializing in the boarding of broodmares and their foals. A recent economic downturn in the thoroughbred industry has...

Why is an American option worth at least as much as an otherwise similar European option? Is there an exercise strategy that one can use to turn an American option into a European option? Explain.

The Wayne City Council approved and adopted its general fund budget for 2013. The budget contained the following amounts: Estimated revenues $70,000,000 Appropriations 66,000,000 Authorized transfer...

Ann and Bill were on the list of a local adoption agency for several years, seeking to adopt a child. Finally, in 2016, good news came their way, and an adoption seems imminent. They paid qualified...

The executor of Gina Purcells estate has recorded the following information: Assets discovered at death (at fair value): Cash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....

What is the difference between the dictionary methods pop and popitem?

Question 1 1. A Michigan travel agent wants to examine the relationship between the number of days temperatures fell below 20 degrees in December and the number of subsequent cruise bookings in...

You want to have $2.5 million in real dollars in an account when you retire in 40 years. The nominal return on your investment is 10.1 percent and the inflation rate is 3.4 percent. What real amount...

Parker & Stone, Inc., is looking at setting up a new manufacturing plant in South Park to produce garden tools. The company bought some land 7 years ago for $6 million in anticipation of using it as...