subject
Physics, 26.07.2019 04:20 lydialinton23

Astring is wrapped around a uniform disk of mass m = 1.2 kg and radius r = 0.07 m. (recall that the moment of inertia of a uniform disk is (1/2)mr2.) attached to the disk are four low-mass rods of radius b = 0.11 m, each with a small mass m = 0.5 kg at the end. the device is initially at rest on a nearly frictionless surface. then you pull the string with a constant force f = 29 n. at the instant when the center of the disk has moved a distance d = 0.039 m, a length w = 0.023 m of string has unwound off the disk.(a) at this instant, what is the speed of the center of the apparatus? v = ? m/s(b) at this instant, what is the angular speed of the apparatus? w1 = ? radians/s(c) you keep pulling with constant force 29 n for an additional 0.022 s. now what is the angular speed of the apparatus? w2 = ? radians/s

ansver
Answers: 3

Other questions on the subject: Physics

image
Physics, 22.06.2019 01:00, muhammadcorley123456
4. who was the first one to measure the speed of light and conclude that it is finite? 5. who was the first philosopher who thought the speed of light is finite? 13. what is the speed of light numerically? 14. give an example of something moving faster than light 15. give an example for some particles or waves that
Answers: 1
image
Physics, 22.06.2019 18:30, winterblanco
Jenny wants to test the electrical conductivity of two substances dissolved in water. she is preparing the containers for the experiment. which factor is most important for her to control? a) volumes of the solutions b) appearance of the solutions c) temperatures of the solutions d) concentrations of the solutions
Answers: 1
image
Physics, 22.06.2019 19:30, 23basu3
Petroleum contains energy. a. light b. kinetic c. chemical d. mechanical
Answers: 2
image
Physics, 22.06.2019 21:00, rina62
On a mild saturday morning while people are working inside, the furnace keeps the temperature inside the building at 23degreesc. at noon the furnace is turned off, and the people go home. the temperature outside is a constant 16degreesc for the rest of the afternoon. if the time constant for the building is 3 hr, when will the temperature inside the building reach 18degreesc? if some windows are left open and the time constant drops to 2 hr, when will the temperature inside reach 18degreesc?
Answers: 3
You know the right answer?
Astring is wrapped around a uniform disk of mass m = 1.2 kg and radius r = 0.07 m. (recall that the...

Questions in other subjects:

Konu
Social Studies, 27.07.2019 09:00
Konu
Mathematics, 27.07.2019 09:00
Konu
Mathematics, 27.07.2019 09:00