Rotational MotionHard
Question
A dancer on ice spins faster, when she folds her arms. This is due to
Options
A.increase in energy and increase in angular momentum
B.decrease in friction at the skates
C.constant angular momentum and increase in kinetic energy
D.increase in kinetic energy and decrease in angular momentum.
More Rotational Motion Questions
A nuniform bar of length 6a and mass 8 m lies on a smooth horizontal table. Two points masses m and 2m moving in the sam...The moment of inertia of a thin uniform rod of mass M and length l about an axis perpendicular to the rod, through its c...A thin circular ring of mass M and radius ′r′ is rotating about its axis with a constant angular velocity &#...A ring of radius r and mass m rotates about an axis passing through its centre and perpendicular to its plane with angul...A solid cylinder of mass 20kg has length 1 m and radius 0.2 m. Then its moment of inertia (in kg-m2) about its geometric...