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A ball is orbiting counterclockwise at 100 revolutions per minute (rpm) around a circle of radius 10 cm. The center of the circle is at the x-y origin (0, 0). At t = 0, the ball is at (10 cm, 0). When does the ball first reach the y axis?

Respuesta :

akaleti47
speed= 100 rev/1 min=(1/4rev)/x min

x=(1/400)min=60/400 sec=3/20=0.15 sec
abiolataiwo2015

If At t = 0, the ball is at (10 cm, 0). The ball first reach the y axis at: t = 0.15 sec.

When the ball first reach y axis?

First step

Since the ball is rotating 100 revolution per minute

Hence,

frequency (f) = 100/60 (1min =60sec)

Second step

Speed=60/400 sec

Speed=0.15 s

Therefore the ball first reach the y axis at: t = 0.15 sec.

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