Question

what is the displacement of the minute hand of wall clock from 8:00 am to 9:00 am ?

pls give me brief explanation answer.

it's urgent guys​.

Answer 1

Answer:

The path traveled by the tip of the minute hand over the course of one hour is a circle of radius r=6. The circumference of that circle is

C=2πr=2π⋅6=12π.

The tip has traveled 10 inches since noon, so the fraction of the circle traveled is 1012π,

and the number of minutes that have expired since noon is 1012π⋅60≈16.

Therefore, to the nearest minute, the time is 12:16.

Answer 2

We have to find the displacement of the minute hand wall clock from 8 : 00 am to 9 : 00 am.

solution : time gap between 8 : 00 am and 9 : 00 am is 1 hour.

you know, a minute hand completes one revolution in every one hour, don't it ?

so minute hand completed one revolution from 8 : am to 9 : 00 am.

we know, if any object completes one revolution of a circular path, displacement must be zero.

so, the displacement of the minute hand of wall clock from 8 : 00 am to 9 : 00 am is zero.

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