Created by StemPy LabTwo stars of masses and form a binary system. They move in circles about their common centre of mass, always staying a distance apart. If is the gravitational constant, the period of their motion is
← All Quizzes
← A horizontal platform in the shape of a uniform disc, of mass 200 kg and radius 2 m, turns freely about a vertical axis through its centre. A man of mass 80 kg stands at the centre, and the platform turns at 10 revolutions per minute. The man now walks slowly along a radius to the edge of the platform. Treat the man as a point mass. The new rate of turning is closest toA drop of water of radius 1.0 mm is sprayed into 1000 identical tiny droplets. The surface tension of water is 0.072 N/m. Ignoring any change in temperature, the work needed to do this is closest to →
More onMechanics › Gravitation
Discussion (0)
Log in to join the discussion.
Loading…