A student sits on a rotating stool holding two 2 kg objects. When his arms are extended horizontally, the objects are 0.9 m from the axis of rotation, and he rotates with angular speed of 0.74 rad/sec. The moment of inertia of the student plus the stool is 7 kg m2 and is assumed to be constant. The student then pulls the objects horizontally to a radius 0.28 m from the rotation axis.
(a) Find the new angular speed of the student.
rad/s
(b) Find the kinetic energy of the student before and after the objects are pulled in.
before: J
after: J
Answers: 1
Physics, 22.06.2019 11:00
The government has declared that a hurricane is likely to hit the east coast. which government division is part of acf and provides guidance to citizens? a. job opportunities for low-income individuals b. office of human services emergency preparedness and response c. assets for independence d. low-income home energy assistance program
Answers: 1
Physics, 22.06.2019 12:40
Question part points submissions used suppose that 2 j of work is needed to stretch a spring from its natural length of 26 cm to a length of 36 cm. (a) how much work is needed to stretch the spring from 28 cm to 32 cm? (round your answer to two decimal places.)
Answers: 2
A student sits on a rotating stool holding two 2 kg objects. When his arms are extended horizontally...
History, 22.04.2021 19:10
Health, 22.04.2021 19:10
Mathematics, 22.04.2021 19:10
Mathematics, 22.04.2021 19:10
Social Studies, 22.04.2021 19:10
Mathematics, 22.04.2021 19:10
Mathematics, 22.04.2021 19:10