PHYSICS 1L03 Lecture Notes - Coordinate System
25 Jan 2014
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Fx a sin8. 9 v v: draw free body diagram for each block: mg cos gm. The pulley is frictionless (ideal), so does not have any effect, expect transferring tension. Two blocks are moving with the same acceleration, but in opposite direction. 2: coordinate system: take x-coordinate parallel to the inclined surface and y-coordinate perpendicular to m m m. Fnet ma the inclined surface, as shown. First, draw free body diagram: a) write newton"s 2nd law (equation of motion) in each coordinate: x. 0 a mg sin m g sin a. 2 b) write newton"s 2nd law (equation of motion) in each coordinate: 0 mg a sin m f k g sin f k m. 3. 39 a: draw free body diagram for each block. So you have to have three free body diagrams: m s m s. Write newton"s 2nd law (equation of motion) for each block separately (in x direction) Add all of them: eq(1) + eq(2) + eq(3)
