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jonny [76]
2 years ago
5

A hydraulic lift is to be used to lift a 2000-kg weight by putting a weight of 25 kg on a piston with a diameter of 10 cm. Deter

mine the diameter of the piston on which the weight is to be placed.
Mathematics
2 answers:
grigory [225]2 years ago
6 0

Answer:

88 centimeters is the diameter of the cilinder

Step-by-step explanation:

The pressure on both ends of the lift must be the same. Assuming the piston is cilindrical, its area will be A=π*r² where r is half the diameter

Since pressure P=F/A And P1=P2

F1=2000kg.g

A1=π*r²

F2=25kg.g

A2=π*0.05²

2000/(π*r²)=25/(π*0.05²)

and we solve for A1

r²=2000*0.05²/25

r=\sqrt{\frac{2000*0.05^2}{25}}

r=\sqrt{5}20*0.05/5=0.44m or 44cm

This is the radius, meaning that the diameter will be twice this number

Sloan [31]2 years ago
6 0

Answer:

Diameter=28,4849

Step-by-step explanation:

Remember that the formula for pistons is oftena  simple rule of three, the input and output force is equal to the division of the force by the area of the application of the force:

\frac{25}{78,5}= \frac{2000}{x}\\ x=\frac{2000*25}{78,5} \\x=636,94cm^2

Now that is the area of the circle, we just solve the formula of the circle to calculate the radius:

a=\pi r^2\\r=\sqrt{\frac{636,94}{3,14} } \\r=14,24 cm

Now remember that the radius is half the diameter so we just have to multiply the radius by 2:

14,24*2=28,4849

So the diameter has to be 28,4849

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7. A sales girl is paid Rs 5,000 per month as salary and a 4 commission of % on total sales. If she receives Rs 5,192 at the end
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2 years ago
Each letter of the word "thunderstorm" has been written on a separate slip of paper and put into a box. Find the probability of
xxTIMURxx [149]

SOLUTION

From the question, we want to find the probability of selecting a slip of paper with the letter t on it, then selecting the letter r, with replacement.

This means the probability of selecting t and r.

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There are 12 letters (total outcomes). And there are 2r and 2t.

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Answer:

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Step-by-step explanation:

A). [10(x+3)]-20 = 160

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x = -1.2

----------------------------------------------------------------------

HOPE THIS HELPS!!!

3 0
3 years ago
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