Question

A clock has a minute hand 10 cm long.Find the average velocity between 6.00AM to6.30AM for the tip of minute-hand​

Answer 1

Answer:

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Step-by-step explanation:

avg. velocity= displacement/time.

$displacement = \pi \times radius \\ = 10\pi \: = 31.41 \: cm \\ velocity = \frac{31.41}{30 \times 60} = 0.01745 \: cm \: sec^{ - 1}$

HOPE IT HELPED ✌️❤️

Answer 2

☆Answer☆

$average \: velocity = \frac{total \: \: displacement}{total \: time}$

=40cm /20ec

= 0.4 cm/20sec

= 0.00022m/sec

= 2.2×10^-4m/sec

☆Brainly Extra Knowledge ☆

Very Important Formulae For solving such Questions:

$average \: velocity \: = \frac{total \: \: displacement}{total \: time}$

Always Remember This Formulae Given Above

☆Some Important Concepts About Clock☆

1. As minute hand covers one full circle i.e. 360 degrees in one hour, that means it travels 360/60 = 6 degrees/min.
2. An hour hand covers one part of the 12 major parts of the circle which means it covers 360/12 = 30 degrees in one hour i.e. it travels 30/60 = 1/2 degree per min.
3. The complete circle has a total of 360 degrees and in terms of minute spaces, it has been divided into 60 minutes spaces, which means each minute space represents 360/60 = 6 degrees.
4. The hour hand and minute hand meet once every hour. But in a 12 hour period, they meet 11 times.
5. If the two hands are moving at the normal speeds, they should meet after every 65 5/11 min.
6. The time, in which the minute hand covers 360 degrees (60 minutes), the hour hand only covers 30 degrees (5 minutes).
7. There are 2 right angles every hour, but in a 12 hour period there are 22 such angles.
8. . This 11/2 degrees will be useful in finding the angle between the two hands of the clock.