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Mekhanik [1.2K]

3 years ago

6

three string are attached to a small metal ring, two of the strings make and angle of 35° with the vertical and each is pulled w

ith a force of 7Newton. What force must be applied to the third string to keep the rings stationary?

1 answer:

Julli [10]3 years ago

6 0

No clue sorry man I would help but I need help too

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A 1000 kg turbine has a rotating unbalance of 0.1 kg.m. The turbine operates at a speed between 500 to 750 rpm. What is the maxi

raketka [301]

Answer:

maximum isolator stiffness k =1764 kN-m

Explanation:

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also

transmission ratio $= \frac{1}{[\frac{w}{w_n}]^{2} -1}$

$0.7 =\frac{1}{[\frac{65.44}{w_n}]^2 -1}$

SOLVING FOR Wn

Wn = 42 rad/sec

$Wn = \sqrt {\frac{k}{m}$

k = m*W^2_n

k = 1000*42^2 = 1764 kN-m

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3 years ago

1. A soil core sampling tube of 4 cm diameter, 12 cm length and initial mass of 0.525 kg (sample only), was dried at 105o C and

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Answer:

porosity = 0.07 or 7%

dry bulk density = 3.25g/cm3]

water content =

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water content = $\frac{wet mass - dry mass}{wet mass}$ = 7%

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