Physics: Rotation Example 2

Jul 6th, 2015
Price: $5 USD

Question description

A student sits on a rotating stool holding two 3.5-kg objects. When his arms are extended horizontally, the objects are 1.0 m from the axis of rotation and he rotates with an angular speed of 0.75 rad/s. The moment of inertia of the student plus stool is 3.0 kg · m2 and is assumed to be constant. The student then pulls in the objects horizontally to 0.40 m from the rotation axis.

(a) Find the new angular speed of the student. (b) Find the kinetic energy of the student before and after the objects are pulled in.

Tutor Answer

(Top Tutor) Daniel C.
School: UCLA

Studypool has helped 1,244,100 students

Review from our student for this Answer

Jul 6th, 2015
"Thanks for the help. "
Ask your homework questions. Receive quality answers!

Type your question here (or upload an image)

1823 tutors are online

Brown University

1271 Tutors

California Institute of Technology

2131 Tutors

Carnegie Mellon University

982 Tutors

Columbia University

1256 Tutors

Dartmouth University

2113 Tutors

Emory University

2279 Tutors

Harvard University

599 Tutors

Massachusetts Institute of Technology

2319 Tutors

New York University

1645 Tutors

Notre Dam University

1911 Tutors

Oklahoma University

2122 Tutors

Pennsylvania State University

932 Tutors

Princeton University

1211 Tutors

Stanford University

983 Tutors

University of California

1282 Tutors

Oxford University

123 Tutors

Yale University

2325 Tutors