Question

the length of second needle of a watch is 3.0 cm . find the angular and linear velocities of the tip of the needle​

Answer 1

Explanation:

Angular speed = 2 pi radians/ 60 sec

w = pi/30 red/sec.

Linear speed = v = r w =

v = 3×pi/30= pi/10 cm/sec.

change in velocity after one quarter of minute:

change i n velocity after half of circle:

2 v = pi/15 cm/sec.

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