33. A ballet dancer is spinning in the middle of a horizontal frictionless stage
ID: 1608109 • Letter: 3
Question
33. A ballet dancer is spinning in the middle of a horizontal frictionless stage. Which of the following things could he change by moving parts of his body or his whole body? (There could be more than one correct choice.)
his total kinetic energy
his translational kinetic energy
his rotational kinetic energy
his angular momentum
his moment of inertia
the horizontal component of his linear momentum
the location of his center of mass (or center of gravity)
A.)his total kinetic energy
B.)his translational kinetic energy
C.)his rotational kinetic energy
D.)his angular momentum
E.)his moment of inertia
F.)the horizontal component of his linear momentum
G.)the location of his center of mass (or center of gravity)
Explanation / Answer
Since there is no external torque acting on the system neither any external force acting on the system.
So angular moment of the system and linear momemtum of the system will remain conserved.
so following things will change
A) his total kinetic energy
C) his rotational kinetic energy
E) his moment of inertia
G) the location os his center of mass( or center of gravity)
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.