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3 years ago

7

What is the centripetal acceleration of a ball on a string that is whirled horizontally over a boy’s head? The radius of the cir

cle is 1.8 meters, and the ball is traveling at 9.2 meters/second.

2 answers:

Mazyrski [523]3 years ago

6 0

Answer:

Centripetal acceleration of boy on a string is 47.02 m/s²

Explanation:

It is given that,

Radius of the circle, r = 1.8 m

Speed of the ball, v = 9.2 m/s

Centripetal acceleration is given by :

$a_c=\dfrac{v^2}{r}$

$a_c=\dfrac{(9.2)^2}{1.8}$

$a_c=47.02\ m/s^2$

Hence, the centripetal acceleration of a ball on a string that is whirled horizontally over a boy’s head is 47.02 m/s²

Leya [2.2K]3 years ago

4 0

Well the centripetal acceleration would be 9.82 squared. That is the correct answer. I hope this helped you. Have a great day! :)

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Where:

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Begining with (1):

$x=V_{o} cos(0\°) t$ (3)

$x=V_{o}t$ (4)

Finding $t$ from (2):

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Substituting (6) in (4):

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Finally:

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