Aptitude Test Problems in Physics Science for Everyone by S Krotov ( PDFDrive.com )

244 Aptitude Test Problems in Physics

Since the acceleration of the wedge linearly depends
on time, for calculating the velocity u of the wedge
by the moment of time to we can use the mean
value of acceleration am = pocal (2m):

cc =-- amto —^

2mv •

When the entire wedge is in the region of an ele-

vated pressure, the resultant force acting on the

wedge is zero. The answer to the problem implies

that the condition u < v means that Po <<

2mv2I(abc).

poabc