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ad-work [718]
3 years ago
14

if a wheel with a diameter of 10 feet spins at a rate of 5 revolutions per minute, find the approximate linear velocity in miles

per hour use pi. 3.14
Mathematics
1 answer:
hram777 [196]3 years ago
6 0
A) Linear velocity, v = ωr           ω = Angular velocity, r = radius.

ω = 5 revolutions per minute.  1 minute = (1/60) hour. 

= 5*2π radians / (1/60) hour = 600π radians per hour          π = 3.14 

= 600*3.14 = 1884 radians / hour

but radius, r = 10 feet,  5280 feet = 1 mile,  10 feet = (10/5280) mile   

Linear velocity, v = ωr

                       v = 1884 radians / hour *  (10/5280) mile   
                       v ≈  3.568 miles / hour
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Three farmers buy a total of 2,249 acres of land at an auction, Farmer Mel buys land that is 3 times as many acres as Farmer Cas
fgiga [73]

Answer:

Farmer Anne's land = 173 acres

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Step-by-step explanation:

Total acre = 2,249

Let

Farmer Anne's land = x

Farmer Cassius = 3x

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x + 3x + 9x = 2,249

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x = 173

Farmer Anne's land = x = 173 acres

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Farmer Mel = 3(3x) = 9x

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Therefore,

Farmer Anne's land = 173 acres

Farmer Cassius = 519 acres

Farmer Mel = 1,557 acres

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Step-by-step explanation:

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