Physics, 08.04.2020 20:20 lilytimpsonx

An ice skater has a moment of inertia of 5.0 kg x m^2 when her arms are outstretched. At this time, se is spinning at 3.0 revolutions per second (rps).
a) if she pulls in her arms and decreases her moment of inertia to 2.0 kg x m^2, how fast will she be spinning?
b) what is her change in rotational kinetic energy?

Answers: 3

Show answers

Other questions on the subject: Physics

Physics, 21.06.2019 22:30, jasoncarter

The membrane surrounding a living cell consists of an inner and an outer wall that are separated by a small space. assume that the membrane acts like a parallel plate capacitor in which the effective charge density on the inner and outer walls has a magnitude of 7.0 × 10-6 c/m2. (a) what is the magnitude of the electric field within the cell membrane? (b) find the magnitude of the electric force that would be exerted on a potassium ion (k+; charge = +e) placed inside the membrane.

Answers: 1

continue

Physics, 22.06.2019 03:30, MK100

When a spring is compressed, the energy changes from kinetic to potential. which best describes what is causing this change? work power gravitational energy chemical energy

Answers: 3

continue

Physics, 22.06.2019 09:30, quay84

For this car, predict the shape of a graph that shows distance (x) versus time (t). note that time is the independent variable and will be on the bottom axis. need asap

Answers: 1

continue

Physics, 22.06.2019 15:00, gabflips7267

What kind of simple machine is a catapult?

Answers: 1

continue

You know the right answer?

An ice skater has a moment of inertia of 5.0 kg x m^2 when her arms are outstretched. At this time,...