In an engine, a piston oscillates with simple harmonic motion so that its position varies according to the expression, x = 5.00 cos ( 5t + where x is in centimeters and t is in seconds. (a) At t = 0, find the position of the piston. 4.99 cm (b) At t = 0, find velocity of the piston. -0.274 |× cm/s (c) At t = 0, find acceleration of the piston. × cm/s2 |-124.9 (d) Find the period and amplitude of the motion. period 3.14 amplitude 5 cm

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