Mechanical Properties of Fluids
A flat plate is moving normal to its plane through a gas under the action of a constant force . The gas is kept at a very low pressure. The speed of the plate is much less than the average speed of the gas molecules. Which of the following options is/are true?
- The resistive force experienced by the plate is proportional to
- At a later time the external force balances the resistive force
- The plate will continue to move with constant non-zero acceleration, at all times
- The pressure difference between the leading and trailing faces of the plate is proportional to
Correct Answer: Option(b)(d)
As and are acting in opposite direction so
m is the mass of the plate.