3 years ago

An iron ball weighs 80 N on the surface

Physics

1 answer:

Degger [83]3 years ago

7 0

Answer:

2√5N will be the weight.

Explanation:

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Explanation:

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2 years ago

if a 0.040-kg stone is whirled horizontally on the end of a 60-m string at a speed of 4.4 m/s, what is the centripetal force ? *

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0.013N

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$F=\frac{mv^{2} }{r}$

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3 years ago

A solid, horizontal cylinder of mass 18.0 kg and radius 1.70.0 m rotates with an angular speed of 40 rad/s about a fixed vertica

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Answer:39.88 rad/s

Explanation:

Given

mass of cylinder m_1=18 kg

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let $\omega _2$ be the final angular velocity of cylinder

Conserving Angular momentum

$L_1=L_2$

$\left ( \frac{m_1R^2}{2}\right )\omega =\left ( \frac{m_1R^2}{2}+m_2r^2\right )\omega _2$

$\left ( \frac{18\cdot 1.7^2}{2}\right )\cdot 40=\left ( \frac{18\cdot 1.7^2}{2}+0.8\cdot 0.3^2\right )\omega _2$

$26.01\times 40=26.082\times \omega _2$

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3 years ago

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See the attached pictures for detailed steps.

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