The performance of a circus acrobat, such as when they perform a somersault or spin, is based on the conservation of angular momentum. Angular momentum is conserved when no external torque acts on the system. For example, when a person pulls their arms in while rotating, their moment of inertia decreases, and their rotational speed increases to conserve angular momentum.
Hence, the correct answer is (C).
Kepler's second law (law of areas) of planetary motion leads to law of conservation of
Kepler's second law (law of areas) of planetary motion leads to law of conservation of