The seconds hand of a watch is 2 cm long.The displacement of the tip of the hand in 15 seconds is
a)0.5 cm
b)1.0 cm
c)6.28 cm
d)3.14 cm
It's urgent....
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The seconds hand of a watch is 2 cm long.The displacement of the tip of the hand in 15 seconds is
a)0.5 cm
b)1.0 cm
c)6.28 cm
d)3.14 cm
It's urgent....
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3.14
1/4 x 2 x 3.14 x 2
so answer is 3.14
Answer:
3.14 cm
Explanation:
its because.....
You get distance traveled by the tip of the seconds hand by
= 2*pi*r
=88/7
as 1min= 60sec
speed = 88/(7*60)
= 0.21/sec
d=s*t
so, 0.21*15 = 3.14cm