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Mechanical Properties of Fluids
Question
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Why machines are sometimes jammed in winter?

Answer

The machines are lubricated with oils to reduce the force of friction. In winter, due to fall in temperature the viscosity of oil increases and hence machines get jammed.

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Some More Questions From Mechanical Properties of Fluids Chapter

What is an ideal liquid?

Do liquids exert pressure?

Define pressure.

What is the direction of pressure?

What is the direction in which pressure exerts force on the walls of a container?

What is the SI unit of pressure?

You have two identical glass flasks. One is open mouthed and other is filled with helium and sealed. Which of the two will weigh more?

A cylinder of length l and area of cross section a is filled with liquid of density ρ to a height h. What is the pressure at the bottom due to height column of liquid?