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3 years ago

What is the force applied to a baseball that has a mass of 142kg and has a acceleration of 30m/s to the power of 2

Physics

1 answer:

aev [14]3 years ago

7 0

Mass=m=142kg
Acceleration=a=30m/s
Force=F

Using Newton's second law

$\\ \sf\Rrightarrow F=ma$

$\\ \sf\Rrightarrow F=142(30)$

$\\ \sf\Rrightarrow F=4260N$

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3 years ago

A 2.3 kg , 20-cm-diameter turntable rotates at 110 rpm on frictionless bearings. Two 460 g blocks fall from above, hit the turnt

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The correct solution is "64 RPM".

Explanation:

The given values are:

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M = 2.3 kg

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D = 20 cm

i.e.,

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N = 110 rpm

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According to angular momentum's conservation,

⇒ $I_1\omega_1=I_2\omega_2$

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On substituting the values, we get

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$=0.0115+0.0092$

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