Chapter 14 Cornell Notes - CornellNotes Ch.14 AndreMallqui...

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Cornell Notes Ch. 14 Andre Mallqui Pd. 5 14.1 : Newton’s Law of Universal  Gravitation Newton’s law of universal gravitation  – every particle in the  Universe attracts every other particle with a force that is  directly proportional to the product of their masses and  inversely proportional to the square of the distance between  them. Inverse-square law –  form of the force law that shows that  the magnitude of the force varies as the inverse square of the  separation of particles. The gravitational force exerted by a finite-size spherically   symmetric mass distribution on a particle outside the   distribution is the same as if the entire mass of the   distribution were concentrated at the center. 14.2 : Measuring the  Gravitational Constant Henry Cavendish measured the universal constant by using  an apparatus with two small spheres on the ends of a  horizontal rod, which is suspended by a fiber of wire. When  two larger spheres are placed close to the smaller spheres,  the rod spins and moves. A beam of light records the angle  and from that we can find the constant. Example 14.1 : Billards, anyone? We can find the force exerted on a cue ball by two other balls  by finding the components of the forces from each ball and  then combining the components and then finding the  resultant. We find the forces by using Newton’s law of  universal gravitation 14.3 : Free-fall acceleration and  the gravitational force
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