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Studentka2010 [4]
3 years ago
9

How does friction affect speed?

Physics
1 answer:
weeeeeb [17]3 years ago
7 0

Answer:

Friction is a force tends to oppose relative motion between bodies when they are in direct contact. Remember this friction does not oppose motion, it opposes relative motion.

Explanation:

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Explanation:

90 rpm = 90 / 60 rps

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(1/2) I ω² = 10⁷ J

I = 2 x  10⁷ / ω²

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Let radius of wheel be R

I = 1/2 M R² , M is mass of flywheel

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R⁴ = 2 x 2.2538 x 10⁵ / πt d

= 4.5076 x 10⁵ / 3.14 x .1 x 7800

= 184

R= 3.683 m .

diameter = 7.366 m .

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= ω² R

= 9π² x 3.683

= 326.816 m /s²

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