Unformatted text preview: below. The mombnt of inertia of the pulley is negligible. The rope exerts a force on the bar exactly at the axis of rotation of the dumbell. As the mass falls, the dumbell rolls without slipping. What is the acceleration of the system? 1 . 5 l , ) d--1. t I m z / . o k 1 3. A planet revolves around a star in an elliptical orbit. At its point of closest approach to the star, it is a distance of 1.0 x l0^l l m from the star and is travelng at a speed of 2.0 x 10"4 m/s. At its-point of furthest distance from the star, it is traveling at 1.2 x l0^4 m/s. (a) How far must it be from the star at that time? (b) What is the eccentricity of the orbit? 6. t'-. tl't -,3,o t<7 . l - - 6 . ,...
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- Spring '10
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