MCQOPTIONS
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MCQOPTIONS
| 1. |
What is the equation for drag force on a spherical body, when external force acts with acceleration a? Here is the density of fluid, P is the density of particle, m is mass of the particle, Cd is the drag coefficient and r is the radius of the sphere. |
| A. | u = ( sqrt { frac {8 times r times a( P)}{3 times Cd times P}} ) |
| B. | u = ( sqrt { frac {8 times r times a( P )}{3 times Cd times }} ) |
| C. | u = ( sqrt { frac {3 times r times a( P )}{Cd times }} ) |
| D. | u = ( sqrt { frac {4 times r times a( P )}{3 times Cd times }} ) |
| Answer» C. u = ( sqrt { frac {3 times r times a( P )}{Cd times }} ) | |