A student sits on a freely rotating stool holding two weights, each of mass 3 00 kg (Figure P11 30) When his arms are extended horizontally, the weights are 1 00 m from the axis of rotation and he rotates with an angular speed of 0 750 rad s The moment of inertia of the student plus stool is 3 00 kg cent m2 and is assumed to be constant The student pulls the weights inward horizontally to a position 0 300 m from the rotation axis (a) Find the new angular speed of the student (b) Find the kinetic energy of the rotating system before and after he pulls the weights inward 0 Figure P11 30

Question: A student sits on a freely rotating stool holding two weights, each of mass 3.00 kg (Figure P11.30). When his arms are extended horizontally, the

A student sits on a freely rotating stool holding two weights, each of mass 3.00 kg (Figure P11.30). When his arms are extended horizontally, the weights are 1.00 m from the axis of rotation and he rotates with an angular speed of 0.750 rad/s. The moment of inertia of the student plus stool is 3.00 kg €¢m2 and is assumed to be constant. The student pulls the weights inward horizontally to a position 0.300 m from the rotation axis. (a) Find the new angular speed of the student. (b) Find the kinetic energy of the rotating system before and after he pulls the weights inward.

A student sits on a freely rotating

0 Figure P11.30

Step by Step Solution

★★★★★

3.32 Rating (161 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

a b The total angular momentum of the system of the student the stool and the we... 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-A-M (30).docx

120 KBs Word File

Students Have Also Explored These Related Mechanics Questions!

A flywheel rotates with an angular speed of 25 rev/s. As it is brought to rest with a constant acceleration, it turns 50 rev. (a) What is the magnitude of the angular acceleration? (b) How much time...

A slender rod, 0.240 m long, rotates with an angular speed of 8.80 rad/s about an axis through one end and perpendicular to the rod. The plane of rotation of the rod is perpendicular to a uniform...

A Porter governor has two balls each of mass 3 kg and a central load of mass 15 kg. The arms are all 200 mm long, pivoted on the axis. If the maximum and minimum radii of rotation of the balls are...

A student sits on a freely rotating stool holding two weights, each of mass 2.98 kg. When his arms are extended horizontally, the weights are 0.95 m from the axis of rotation and he rotates with an...

A student sits on a freely rotating stool holding two dumbbells, each of mass 3.09 kg (see figure below). When his arms are extended horizontally (Figure a), the dumbbells are 0.97 m from the axis of...

2. [0/4 Points] PREVIOUS ANSWERS ASK YOUR TEACHER A disk with moment of inertia 11 rotates about a frictionless, vertical axle with angular speed all. A second disk, this one having moment at inertia...

A student sits on a freely rotating stool holding two dumbbells, each of mass 2.90 kg (see figure below). When his arms are extended horizontally (Figure a), the dumbbells are 0.94 m from the axis of...

A student sits on a freely rotating stool holding two dumbbells, each of mass 2.90 kg (see figure below). When his arms are extended horizontally (Figure a), the dumbbells are 1.02 m from the axis of...

A student sits on a freely rotating stool holding two weights, each of mass 4.28kg (see the attached figure). When his arms are extended horizontally, the weights are 0.56 m from the axis of rotation...

A student sits on a freely rotating stool holding two dumbbells, each of mass 2 . 9 9 kg ( see figure below ) . When his arms are extended horizontally ( Figure a ) , the dumbbells are 0 . 9 9 m from...

Suppose there are two types of food, meat and bread. Draw indifference curves for the following consumers. a. Mia is a vegetarian who doesn't care (one way or the other) about meat. b. Taka, a sumo...

A supermarket wants to revamp its products to reduce the time its customers spend indoors as a safety measure during the pandemic. To do this, he divided his products into 5 families and observed how...

9-11 A company plans to sell 220 units. The selling price per unit is $24. There are 50 units in beginning inventory, and the company would like to have 20 units in ending inventory. How many units...

On December 31, 2019, Carme Company had significant amounts of accounts receivables as a result of credit sales to its customers. Carme uses the allowance method based on credit sales to estimate bad...

PLEASE ANSWER THE BLANKS, ALL THE ANSWERS I RECIEVED WERE INCORRECT We are evaluating a project that costs $832,000. has an eight-year life, and has no salvage value. Assume that depreciation is...

Joe entered into partnership with two others in the establishment of a real estate sales agency. The other two, Sam and Harry, had considerable experience in the real estate business but no money....

pls help asap! show calculations 10 points Save Answer Consider a four-year project with the following information: initial fixed asset investment = $375,000; straight-line depreciation to zero over...