Question

Q.6)
A circular annular plate bonded by two concentric circles of diameter 1.2 m and
0.8 m is immersed in water with its plane making an angle of 45 degree with
the horizontal. If the centre of the circles is 1.625 n below the free surface,
the total pressure force on one side of the plate ir kN, is ------- (1 marks )
Ans.
7.07
10
14.14
18​

Answer 1

Answer:

10

Step-by-step explanation:

the sum solution is photograph

Answer 2

Answer:

The total pressure force on the face of the plate is given by 10 kN

Explanation:

Given:

A circular annular plate bounded by two concentric circles of diameter 1.2 m and 0.8 m is immersed in water with its plane making an angle of 45° with the horizontal. The center of the circles is 1.625 m below the free surface.

To find: The total pressure force on the face of the plate

Solution:

$\bar{x}=1.625m$

$\therefore$ $\bar{x}$  for the annulus is concentrated at its Centro.

$F_H=\gamma A\bar{x}$

$=(9810)(\frac{\pi }{4}(1.2)^2-(0.8)^2) )1.625$

$=10016.18N$

$=10.016kN$

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