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mestny [16]
3 years ago
12

Question 4 (1 point) ✓ Saved

Physics
1 answer:
Kamila [148]3 years ago
6 0
Probably false. but correct me if i’m wrong
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One kind of baseball pitching machine works by rotating light and stiff rigid rod about a horizontal axis until the ball is movi
erastova [34]

Answer:

(a). The ball's centripetal acceleration is 16.17\times10^{2}\ m/s^2

(b). The magnitude of the net force is 232.9 N.

Explanation:

Given that,

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(a). We need top calculate the ball's centripetal acceleration just before it is released

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a=\dfrac{v^2}{r}

Where, v = speed

r  = radius

Put the value into the formula

a=\dfrac{(36.2)^2}{81\times10^{-2}}

a=1617.82\ m/s^2

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(b). We need to calculate the magnitude of the net force that is acting on the ball just before it is released

Using formula of force

F=\dfrac{mv^2}{r}

Put the value into the formula

F=\dfrac{144\times10^{-3}\times(36.2)^2}{81\times10^{-2}}

F=232.9\ N

Hence, (a). The ball's centripetal acceleration is 16.17\times10^{2}\ m/s^2

(b). The magnitude of the net force is 232.9 N.

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