Question

The figure shows a conical container of half-apex angle `37^(@)` filled with certain quantities of kerosene and water the force exerted by the water on the kerosene is approximately

A. `3xx17^(7)N`
B. `4xx10^(7)N`
C. `2xx10^(7)N`
D. `5xx10^(7)N`

Answer 1

Correct Answer - C
`r/8=tan37^(@)=3/4`
`r=6m`
`F-(P_(0)+hrhog)pir^(2)`
`=(10^(5)+10xx800xx10)xxpixx36`
`1.8xx36xxpixx10^(5)`
`=2xx10^(7)`