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Serggg [28]
3 years ago
7

A skateboarder wants to cross a large playground and notices that there are large shapes painted on its asphalt surface. One sha

pe is a large circle that covers the entire playground. Inscribed in that circle is a square, with one point at the skateboarder’s feet and the other at his destination. The surface is rough and, therefore, friction is present. What path does he follow in order to minimize the work done by nonconservative forces?
Physics
1 answer:
Elden [556K]3 years ago
6 0
<h2>Diagonal of circle </h2>

Explanation:

As the skateboarder wants to cross the play ground . The surface is rough .

As we know , the force of friction is non-conservative force . Thus work is required against this force .

We have formula:

work done = Force x distance (in one direction )

Te force applied cannot be changed , so he is to decrease the distance .

In case of circle , diameter is the minimum distance . Thus he is supposed to move along it .

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ivolga24 [154]

Answer:

The acceleration of the wallet is 3\hat{i}+6\hat{j}

Explanation:

Given that,

Radius of purse r= 2.30 m

Radius of wallet r'= 3.45 m

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We need to calculate the acceleration of the wallet

Using formula of acceleration

a=r\omega^2

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\omega=\omega'

\sqrt{\dfrac{a}{r}}=\sqrt{\dfrac{a'}{r'}}

\dfrac{a}{r}=\dfrac{a'}{r'}

\dfrac{a'}{a}=\dfrac{r'}{r}

\dfrac{a'}{a}=\dfrac{3.45}{2.30}

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a'=3\hat{i}+6\hat{j}

Hence, The acceleration of the wallet is 3\hat{i}+6\hat{j}

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3 years ago
The Cosmo Clock 21 Ferris wheel in Yokohama, Japan, has a diameter of 100 m. Its name comes from its 60 arms, each of which can
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Answer:

Explanation:

a ) speed of passenger = circumference / time

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b )

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= 959.47 N

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d )

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= 882 - (882 / 9.8 )x 22.13²/50

= 882 +  882

= 1764 N  

=

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3 years ago
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The organ procurement and transplant network (OPTN) was established by?
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so your saying the start is 0 N and when he/she hits the ball its inertia is 3 N. if that is so m*v=

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