A student sits on a rotating stool holding two 2.0 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 the objects horizontally to 0.40 m from the rotation axis. (a) Find the new angular speed of the student. rad/s (b) Find the kinetic energy of the student system before and after the objects are pulled in. before after
A student sits on a rotating stool holding two 2.0 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 the objects horizontally to 0.40 m from the rotation axis. (a) Find the new angular speed of the student. rad/s (b) Find the kinetic energy of the student system before and after the objects are pulled in. before after
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![A student sits on a rotating stool holding two 2.0 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 the objects horizontally to 0.40 m from the
rotation axis.
(a) Find the new angular speed of the student.
rad/s
(b) Find the kinetic energy of the student system before and after the objects are pulled in.
before
after](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fb5f65923-b5e6-4be3-9be2-727b112c89ca%2F4a1ee116-ac09-47a9-bc0b-d3ec283e4794%2Fhiyvdnid_processed.jpeg&w=3840&q=75)
Transcribed Image Text:A student sits on a rotating stool holding two 2.0 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 the objects horizontally to 0.40 m from the
rotation axis.
(a) Find the new angular speed of the student.
rad/s
(b) Find the kinetic energy of the student system before and after the objects are pulled in.
before
after
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