question_answer

A rectangular tank of \[6\,\,m\] long, \[2\,\,m\] broad and \[2\,\,m\] deep is full of water, what is the thrust acting on the bottom of the tank?

A) \[23.52\times {{10}^{4}}N\]  

B) \[23.52N\]

C) \[11.76\times {{10}^{4}}N\]                 

D) \[3.92\times {{10}^{4}}N\]

Correct Answer: A

Solution :

Thrust \[=\]Total weight acting normally = mg But mass \[=\] volume \[\times \] density \[\therefore \]Thrust = volume of tank \[\times \] density of water \[\times \,\,g\]             \[=(6\times 2\times 2)\times ({{10}^{3}})\times (9.8)\]             \[=23.52\times {{10}^{4}}N\]