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Talja [164]
3 years ago
10

A 160-lb man carries a 5-lb can of paint up a helical staircase that encircles a silo with radius 20 ft. If the silo is 90 ft hi

gh and the man makes exactly three complete revolutions, how much work is done by the man against gravity in climbing to the top
Mathematics
1 answer:
zheka24 [161]3 years ago
5 0

Weight of man and paint = 160 + 5 = 165 total pounds.

Gravitational force is independent of the path taken so we can ignore the radius of the silo.

Work done = total weight x height

The problem says he climbs to the top so overall height is 90 feet

Work = 165 lbs x 90 ft = 14,850 ft-lbs

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Keywords:

<em>Medium sodas, buy, dollars, divide </em>

For this case we must find the amount of medium sodas that Natalie's group can buy, taking into account that they have 20 dollars and that each medium soda costs 1.25 dollars. To solve, we must divide:

Let "x" be the number of medium sodas you can buy, then:

x = \frac {20} {1.25}\\x = 16

So, Natalie's group can buy 16 medium sodas with 20 dollars

Answer:

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3 years ago
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Answer:

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Step-by-step explanation:

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h(t) = -16t^{2} + 168t + 45\\h'(t)= -32t+168\\0=-32t+168\\t=5.3s

8 0
3 years ago
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Y_Kistochka [10]
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Write the recursive formula for 16,23,30,37
4vir4ik [10]

Answer:

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Step-by-step explanation:

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4 0
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First term is -13.

4 0
2 years ago
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