A piston is attached to a crankshaft of radius 7.9 cm (AB) by a connecting rod of length 17.1 cm (BC). The crankshaft rotates counterclockwise at a speed of 2400 rpm. Answer the following, round your answers to at least 3 significant figures and include the units. a. Find ? and how fast ? is changing when ? = 115°. ? = [ ] and is [ ] at a rate of [ ]. b. Find |AC| and how fast the piston is moving when ? = 115°. |AC| = [ ] and the piston is moving [ ] the crankshaft at a rate of [ ].
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