The rotation of the planet Mercury is a little strange compared to Earth. It rotates on its axis very slowly; one rotation takes 56.85 earth days. Assuming Mercury is a perfect sphere of mass 3.29*1023 kg and radius 2440 km, calculate its angular momentum. a) 1.0*1030 kg.m2/s b) 1.0*1028kg.m2/s          c) 1.0*1032 kg.m2/s Calculate its rotational KE. a) 1.4*1023 J                          b) 3.4*1021 J                                   c) 6.4*1023 J

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Torque

Torque is the rotational equivalent of linear force in physics and mechanics. Based on the course of study, it is also known as the moment of force, rotational force, or turning effect.