Question

pls help............
with steps.​

Answer 1

Given :-

• Length of second's hand (r)= 3cm = 0.03m

• Total Time = 1 min. = 60 sec.

To find :-

• Average speed of second's hand of watch

Answer :-

• 0.017$\sf{\ m/s^{2}}$

Explanation :-

$\sf{\underline{\boxed{\red{Average\:Speed\:=\:\dfrac{Total\:Distance}{Total\:Time}}}}}$

Total time is 60 sec. and we will have to find Total distance travelled by second's hand in 60 sec.

For this we will use Formula Circumfrance of Circle.

$\implies\sf{Total\: Distance\:=\:2\pi r}$

$\implies\sf{Total\: Distance\:=\:2\times\dfrac{22}{7}\times0.03}$

$\implies\sf{Total\: Distance\:=\:\dfrac{44}{7}\times\dfrac{3}{100}}$

$\implies\sf{Total\: Distance\:=\:\dfrac{102.6}{100}}$

$\implies\sf{Total\:Distance\:=\:1.02m}$

${}$

_________________________

$\sf{Average\:speed \:=\:\dfrac{1.02}{60}}$

${}$

$\sf{Average\:speed\:=\:\dfrac{102}{6000}}$

${}$

$\sf{\bold{\boxed{\boxed{\green{\dag{Average\: Speed\:=\:0.017\:m/s}}}}}}$

Answer 2

Answer:

The angular velocity of second's hand of a watch will be. ... If the length of the second's hand in a stop clock is 3 cm the angular. play. 3:24.

Explanation:

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