Civil Engineering - Hydraulics - Discussion

Discussion Forum : Hydraulics - Section 3 (Q.No. 2)
2.
A cylindrical vessel 40 cm high is revolved about its vertical axis so that the water touches the bottom when it just spills out. If the radius of the cylinder is 5 cm, the angular velocity of rotation, is
2 rad/sec
3 rad/sec
4 rad/sec
5 rad/sec
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
23 comments Page 1 of 3.

Vaish said:   10 years ago
(4*g*h/3).

Abhi said:   9 years ago
y = yo + [(ω^2 x r^2)/(2 x g)].

0.4 = 0 + [(ω^2 x r^2)/(2 x g)].

0.4*2*9.81/0.05 = ω^2.

ω = 12.52 rad/sec.
(1)

M.s.bainsla said:   9 years ago
2 rad/sec is correct. I agree.

Priya said:   8 years ago
Please explain it clearly.

Mrutyunjay said:   8 years ago
How? Please explain.

Arun said:   8 years ago
How 2rad/sec is correct? Explain.

Anurag said:   8 years ago
Explain how.

Priya said:   7 years ago
It should be (4/3*g*h).

Anshu said:   7 years ago
√ ((0.4*2*9.81)-0.05) = 2.79.

Hence answer is A correct.

Rohit said:   7 years ago
(4/3 * r * h) * 3.14/180.

Putting the values;

4/3 * 40 * 2.23 * 3.14/180.
= 2.08 rad/sec.


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