Advertisements
Advertisements
Question
Why is the tip of an allpin made sharp?
Advertisements
Solution
The tip of an allpin is made sharp so that large pressure is exerted at the sharp end and it can be driven into with less effort.
APPEARS IN
RELATED QUESTIONS
A body experiences the same buoyant force when it floats or sinks in water.
Define the term Density of a substance.
Distinguish between density and relative density.
Complete the following sentence :
Pressure at a depth h in a liquid of density p is ......................
Complete the following sentence :
Pressure at a point inside the liquid is ...................... To its depth.
The pressure P1 at the top of a dam and P2 at a depth h form the top inside water (density p) are related as :
A vessel contains water up to a height of 1.5 m. Taking the density of water 103 kg m-3, acceleration due to gravity 9.8 m s-2 and area of base of vessel 100 cm2, calculate: (a) the pressure and (b) the thrust at the base of vessel.
Describe an experiment to show that a body immersed in a liquid appears lighter than it really is.
Complete the analogy.
Downward force: Weight:: Upward force offered by liquid: _____
Salt water provides less buoyant force than freshwater.
