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53.4k views
in Physics by (49.4k points)

A body oscillates with SHM according to the equation. x(t) = 5cos (2π t + π /4) Where x is in meters and t is in seconds calculate, 

1. displacement att = 0 

2. Angular frequency 

3. Vmax

1 Answer

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Best answer

1. displacement at t = 0

x(0) = 5cos(2π 0 + π/4)

⇒ x = \(\frac{5}{\sqrt2}\)m

2. Angular frequency 

ω = 2π radian/s

3. Vmax = aω = 2π × 5 = 10π m/s

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