A laser beam aimed from the earth is swept across the face of the moon. For related problem-solving tips and strategies, you may want to view a Video Tutor Solution of Rotation of a compact disc. Part A If the beam is rotated at an angular velocity of 1.65 x 10 3 rad/s, at what speed does the laser light move across the moon's surface? (See Appendix E in the textbook for the moon's orbital radius.) Express your answer with the appropriate units. ON HA Value Units Submit Request Answer Part B If the diameter of the laser spot on the moon is 5.85 km, what is the angle of divergence of the laser beam? Express your answer in radians

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Centripetal Force

A particle, body, object or certain mass while travelling in a rotational path or semicircular path, experiences an inertia force. If that inertia force pulls the towards the inward of the imaginary circle in the rotation, it is termed as centripetal force.