3 years ago

Which way does centripetal force point ?

1 answer:

4 0

Hello there.

Which way does centripetal force point ?
<span>
Centripetal force point- Points near the center

Answer: Center</span>

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Choice ' C ' is a correct statement.
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A rotating space station is said to create “artificial gravity”—a loosely-defined term used for an acceleration that would be cr

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Answer: 0.313 rad/s

Explanation:

The equation that relates the velocity $V$ and the angular velocity $\omega$ in the uniform circular motion is:

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$\omega=\frac{V}{r}$ (2)

On the other hand, we are told the “artificial gravity” produced by the cetripetal acceleration $a_{c}$ is $9.8m/s^{2}$ , and is given by the following equation:

$a_{c}=\frac{V^{2}}{r}$ (3)

Isolating $V$ :

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Substitutinng (5) in (2):

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$\omega=0.313rad/s$ This is the angular velocity that would produce an “artificial gravity” of 9 $9.8m/s^{2}$ .

6 0

3 years ago

The mass of an object with 500 J of kinetic energy moving with a velocity of 5 m/s is

Ann [662]

40kg

Explanation:

Given parameters:

Kinetic energy = 500J

Velocity = 5m/s

Unknown:

Mass of the object = ?

Solution:

Kinetic energy is the energy due to motion of a body. It is expressed as:

K.E = $\frac{1}{2}$ mv²

m is the mass of the body

v is the velocity

To find the mass, make it the subject of the expression:

m = $\frac{2 K.E}{v[tex]^{2}$ }[/tex]

m = $\frac{2 x 500}{5[tex]^{2}$ }[/tex] = 40kg

Learn more:

Kinetic energy brainly.com/question/6536722

#learnwithBrainly

4 0

4 years ago