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Shalnov [3]
3 years ago
10

A picture shows the letter "O" made from a piece of plastic. Where is the center of gravity? USE THE DEFINITION OF THE CENTER OF

GRAVITY to help explain how you could prove to someone why you put your dot where you did.
Physics
1 answer:
Paha777 [63]3 years ago
6 0
The center of gravity is at the center of the O(assuming it's a perfect circle) because a perfect circle has a constant radius, so the object is equidistant to the center. This means that the force of gravity on all aspects are equal. Say if you picked a point on the ring. There will always be another point opposite to that point where the gravity of that point counteracts against the gravity o the ring that you picked.
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The plug has a diameter of 30 mm and fits within a rigid sleeve having an inner diameter of 32 mm. Both the plug and the sleeve
Katena32 [7]

Answer:

P=740 KPa

Δ=7.4 mm

Explanation:

Given that

Diameter of plunger,d=30 mm

Diameter of sleeve ,D=32 mm

Length .L=50 mm

E= 5 MPa

n=0.45

As we know that

Lateral strain

\varepsilon _t=\dfrac{D-d}{d}

\varepsilon _t=\dfrac{32-30}{30}

\varepsilon _t=0.0667

We know that

n=-\dfrac{\epsilon _t}{\varepsilon _{long}}

\varepsilon _{long}=-\dfrac{\epsilon _t}{n}

\varepsilon _{long}=-\dfrac{0.0667}{0.45}

\varepsilon _{long}=-0.148

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