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svetoff [14.1K]
3 years ago
8

Use the figure below to answe

Physics
1 answer:
vovikov84 [41]3 years ago
7 0

Answer:

B. Q

A. P

Explanation:

I assume the figure is the one included in my answer.

The pivot (also called the fulcrum) is point Q.

The effort needed to keep the bar balanced is force P.

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2. A can filled with sand has a mass of 0.65kg is swung overhead in a horizontal circle of radius 0.70m at a constant rate of 2.
Aliun [14]
<h3><u>Answer</u>;</h3>

≈ 5 Kgm²/sec

<h3><u>Explanation</u>;</h3>

Angular momentum is given by the formula

L = Iω, where I is the moment of inertia and ω is the angular speed.

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 = 0.65 × 0.7²

 = 0.3185

Angular speed, ω = v/r

                              = (2 × 3.142 × r × 2.5) r

                              =  15.71

Therefore;

Angular momentum =  Iω

                                 = 0.3185 × 15.71

                                 = 5.003635

                                 <u>≈ 5 Kgm²/sec</u>

6 0
3 years ago
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