MCQ
Average pressure pav is defined as:
- A
- B
- C
- D
$\text{P}_\text{av}=\frac{\text{F}}{\text{A}}$
Explanation:
If F is the magnitude of the normal force acting over an area A, then the average pressure p is defined as the normal force acting per unit area.
$\text{P}_\text{av}=\frac{\text{F}}{\text{A}}$
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$[A]$ The midpoint of the bar will fall vertically downward
$[B]$ The trajectory of the point $\mathrm{A}$ is a parabola
$[C]$ Instantaneous torque about the point in contact with the floor is proportional to $\sin \theta$
$[D]$ When the bar makes an angle $\theta$ with the vertical, the displacement of its midpoint from the initial position is proportional to $(1-\cos \theta)$