When you snap your wrist open, the frisbee ___

A student places an object with a mass of m on a disk at a position r from the center of the disk. The student starts rotating t

koban [17]

Answer:

The coefficient of static friction between the object and the disk is 0.087.

Explanation:

According to the statement, the object on the disk experiments a centrifugal force due to static friction. From 2nd Newton's Law, we can represent the object by the following formula:

$\Sigma F_{r} = \mu_{s}\cdot N = m\cdot \frac{v^{2}}{R}$ (1)

$\Sigma F_{y} = N - m\cdot g = 0$ (2)

Where:

$N$ - Normal force from the ground on the object, measured in newtons.

$m$ - Mass of the object, measured in newtons.

$g$ - Gravitational acceleration, measured in meters per square second.

$v$ - Linear speed of rotation of the disk, measured in meters per second.

$R$ - Distance of the object from the center of the disk, measured in meters.

By applying (2) on (1), we obtain the following formula:

$\mu_{s}\cdot m\cdot g = m\cdot \frac{v^{2}}{R}$

$\mu_{s} = \frac{v^{2}}{g\cdot R}$

If we know that $v = 0.8\,\frac{m}{s}$ , $g = 9.807\,\frac{m}{s^{2}}$ and $R = 0.75\,m$ , then the coefficient of static friction between the object and the disk is:

$\mu_{s} = \frac{\left(0.8\,\frac{m}{s} \right)^{2}}{\left(9.807\,\frac{m}{s^{2}} \right)\cdot (0.75\,m)}$

$\mu_{s} = 0.087$

The coefficient of static friction between the object and the disk is 0.087.

5 0

3 years ago

What kind of friction exists between solid objects moving in water?

Stels [109]

The best and most correct answer among the choices provided by the question is drag<span>.

</span><span>Drag </span>kind of friction exists between solid objects moving in water.

Hope my answer would be a great help for you.
If you have more questions feel free to ask here at Brainly.

6 0

3 years ago

The vernal equinox is now just entering the constellation aquarius. In what constellation will it lie in the year a. D. 10000?.

Keith_Richards [23]

The vernal equinox in the year AD 10000 will lie in the constellation Scorpio.

Once every 25800 years a full cycle of precession is completed. There are 12 constellations which means it takes 25800 / 12 = 2150 years to move from one constellation to the next one. The order in which the vernal equinox moves from Aquarius is Capricorn, Sagittarius, Scorpio, Libra etc.

Now the year is 2022 AD where the vernal equinox just entered constellation Aquarius. In 4172 AD it would have entered constellation Capricorn, then constellation Sagittarius in 6322 AD, then constellation Scorpio in 8472 AD and then constellation Libra in 10622 AD. This means that in 10000 AD it is still in constellation Scorpio and yet to enter constellation Libra.

Therefore, In the year 10000 AD, the vernal equinox will lie in the constellation Scorpio.

To learn more about constellation Scorpio

brainly.com/question/4444209

#SPJ4

8 0

1 year ago

A small diameter lead ball and a large diameter rubber ball are dropped from a tower. The balls hit the ground at the same time.

solmaris [256]

This demonstration doesn't tell anything about the force of gravity.
But it does demonstrate that the acceleration of gravity is the same
for all objects, no matter what they weigh.

7 0

3 years ago

A dog walks 14 meters to the west and then 20 meters back

aev [14]

The answer is 34 good luck stay safe

8 0

3 years ago

When you snap your wrist open, the frisbee ____