It is difficult to run fast on sand. - Vidyadip

Question

It is difficult to run fast on sand.

✓

Answer

The intermolecular space between crystals of sand is very large as compared to that in a rigid surface.
Thus, there are number of depressions at the points of contact of feet and sand surface.
Projections and depressions between sand and feet are not completely interlocked.
Thus, action and reaction force become unbalanced. The horizontal component of force helps to move forward and vertical component of the force resist to move.
Hence, it becomes difficult to run fast on sand.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "Short Answer Type Question" from Mechanical Properties of Solids→Mechanical Properties of Solids — all question types→Physics STD 11 Science question papers→Maharashtra Board STD 11 Science question papers→Maharashtra Board question paper generator→

Similar questions

State advantages of cells in series.

A one $kg$ mass tied at the end of the string $0.5 m$ long is whirled in a horizontal circle, the other end of the string being fixed. The breaking tension in the string is $50 N.$ Find the greatest speed that can be given to the mass.

What is p-n junction diode? Draw its circuit symbol.

What is observed after point D in graph? Can steam be hotter than 100 °C?

State Newton’s law of gravitation and express it in vector form

Explain the conclusion when charges are brought close to each other.

What do you mean by kinematical equations and what are they?

A copper wire of radius $0.6 \ mm$ carries a current of $1 A .$ Assuming the current to be uniformly distributed over a cross sectional area, find the magnitude of current density.

Write down the main characteristics of gravitational force.

What ¡s parallax?