Questions
The principle used by a gymnast to increase the number of somersaults, is law of conservation of
detailed solution
Correct option is D
After jumping, a gymnast contracts his body; the moment of inertia of his body decreases.Since in the process of contraction of body, net external torque on the body is zero, angular momentum of the gymnast remains conserved.Talk to our academic expert!
Similar Questions
A disc rotates freely with rotational kinetic energy E about a normal axis through centre. A ring having the same radius but double the mass of disc is now, gently placed on the disc. The new rotational kinetic energy of the system would be
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