Consider a person who is sitting on a friction less rotating stool as in Figure P9.43. The

Question:

Consider a person who is sitting on a friction less rotating stool as in Figure P9.43. The person initially has his arms outstretched and is rotating with an angular speed of 5.0 rad/s. He then pulls his arms close to his body.?

(a) Estimate his final angular speed.?

(b) Estimate the kinetic energy before and after the person pulls his arms into his body.

Concerned with the magnitude of the angular momentum, not its sign.

Figure P9.43

Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Related Book For book-img-for-question

College Physics Reasoning and Relationships

ISBN: 978-0840058195

2nd edition

Authors: Nicholas Giordano

See More Books

Question Posted: Jan 21, 2019 07:57 AM

See More Questions

Repeat Problem 43, but now assume the person is holding a 5.0-kg mass in each hand. Data from Problem 43 Consider a person who is sitting on a friction less rotating stool as in Figure P9.43. The...
Consider a person who is trying to keep cool on a hot summer day by turning a fan on and exposing his body to air flow. The air temperature is 32C, and the fan is blowing air at a velocity of 5 m/s....
Consider a person who is trying to keep cool on a hot summer day by turning a fan on and exposing his entire body to air flow. The air temperature is 85°F and the fan is blowing air at a velocity...
A force of 24N is applied to a wrench which is 0.4m in length. If the force is applied at an angle of 15 degrees, find the torque in N-m. Round off to two decimal places.
A stream of water strikes a stationary turbine blade horizontally, as the drawing illustrates. The incident water stream has a velocity of + 16.0 m/s, while the exiting water stream has a velocity of...
A circuit is comprised of a 1 volt DC voltage source, and two 1k resistors in series. The voltage across each resistor is theoretically 0.5 volts. a. If a voltmeter is used with internal resistance...
In a pretest, 30 respondents were asked to express their preference for an outdoor lifestyle (V1) using a 7 -point scale $(1=$ not at all preferred, 7 = greatly preferred $)$. They were also asked to...
According to the trade press, the success record of knowledge management systems has been spotty. Why do you think this is? What steps must organizations take to give their knowledge management...
Calculating duration of bond Alpha with the par value of $1,000, 10-year to maturity, and 5% coupon bond when its interest rate is 8%. Bond Beta has the par value of $1,000, 7-year to maturity, and...
Problem No. 6 A computer chip factory produces chips with distribution N~(, ) = (100, 4). The production size is 350 chips/hour for 6 hours. (a) The first improvement reduced to (,) = (100, 2.5) 1....
Estimate the angular momentum of an airplane propeller that is spinning at 2000 rpm. Concerned with the magnitude of the angular momentum, not its sign.
Consider the pencil in Problem 26. What is the angular momentum of the pencil just before it strikes the table? Concerned with the magnitude of the angular momentum, not its sign. Data from problem...
Using the information in PA6, determine the amount of revenue and expenses for Olivias Apple Orchard for the month of September. Data from in PA6 Olivias Apple Orchard had the following transactions...
Can you explain how drilling and sampling are important in geotechnical engineering?
In a sewage system he diameter at Section 1 is 16 inches and the diameter at Section 2 is 8 inches. The flow rate through the pipe is 6 cfs. The pressure at Section 1 is 50 psi. What is the pressure...
Summarise the construction of the drainage pipeline system in plumbing and the methods of pipe design. Exemplify plumbing apparatus and various fixtures used in home plumbing system. Technical report...
Sludge is wet solids taht result from the processing in sewage systems. The sludge has to be dried before it can be composed or otherwise handled. if a sludge containing 70% water and 30% solids is...
I need help answering this. Longer explanation is required. Issue: Polluted Sewage System Lack of educational and economic opportunities Environmental problems such as burning of trash As an...
In the hotel industry, which type of forecast may often exceed 100%? a. Demand forecast b. Occupancy forecast c. Revenue forecast d. Variable expense forecast
Show that the peak of the black body spectrum as a function of ? is given by eq. (22.14) kg T Wmax = 2.82
Consider the first-order correction to the energy of interacting spins illustrated in Example Problem 28.3 for 2 . Calculate the energy correction to the wave functions 1 = (1) (2), 2 = (1) (2),...
What is the difference between a configuration and a permutation?
What are the elements of a probability model, and how do they differ for continuous and discrete variables?
A friend owes you $500 in 1 year from now, and then $1000 2 years from now. Both loans are at 5%. If you want to replace both of these loans with ONE PAYMENT NOW, how much would your friend give you ?
If the amount of retained earnings at the beginning of the year was $ 3 0 , 0 0 0 , and $ 1 2 , 0 0 0 in dividends is paid during the year, calculate net income for the year.
On January 2, 20Y4, Whitworth Company acquired 33% of the outstanding stock of Aloof Company for $330,000. For the year ended December 31, 20Y4, Aloof Company earned income of $86,000 and paid...

Consider a person who is sitting on a friction less rotating stool as in Figure P9.43. The

Question:

Wi Wf Initial position Final position

Step by Step Answer:

The angular momentum of this system remains constant because there are no external torques No sketch ...View the full answer

College Physics Reasoning and Relationships

Related Video

Students also viewed these Sciences questions