For most of the surfaces used in daily life, the frition coefficient is less than 1. Is it always necessary that the friction coefficient is less than 1?

A sphere can roll on a surface inclined at an angle theta if the friction coefficient is more than (2)/(7) g sin theta . Suppose the friction coefficient is (1)/(7) g sin theta , and a sphere is released from rest on the incline,

Coefficient of kinetic friction is less than

If the magnification is less than 1 , then we get a diminished image .

As mosquito is sitting on an L.P. record disc rotating on a trun tabel at 33 1/3 revolutions per minute. The distance of the mosquito from the centre of the turn table is 10 cm. Show that the friction coefficient between the record and the mosquito is greater than pi^2/81 . Take g=10m/s^2

The angle between the resultant contact force and the normal force exerted by a body on the other is called the angle of friction. Show that it lamda be the angle of friction and mu the coefficient of static friction. lamdaletan^-1mu .

Current gain common base configuration is less than 1 because

In an ellipse, the sum of the distances between foci is always less than the sum of focal distances of any point on it. Statement 2 : The eccentricity of any ellipse is less than 1.