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

Fig. 55

I. Mechanics^51

length 105 cm at an atmospheric pressure

of 760 mmHg?

1.112. A simple accelerometer (an instru-

ment for measuring acceleration) can be made

in the form of a tube filled with a liquid

and bent as shown in Fig. 55. During mo-

tion, the level of the liquid in the left arm

will be at a height h 1 , and in the right arm

at a height h 2.

Determine the acceleration a of a carriage

in which the accelerometer is installed,

assuming that the diameter of the tube is

much smaller than h 1 and h 2.

1.113. A jet plane having a cabin of length

= 50 m flies along the horizontal with an

acceleration a = 1 m/s 2. The air density

in the cabin is p = 1.2 x 10-3 gicm 3.

What is the difference between the atmo-

spheric pressure and the air pressure exert-

ed on the ears of the passengers sitting in

the front, middle, and rear parts of the

cabin?

1.114. A tube filled with water and closed

at both ends uniformly rotates in a horizon-

tal plane about the 001 -axis. The manome-

ters fixed in the tube wall at distances r 1

4*