Show that the co-efficient of area expansion of a rectangular sheet is twice its linear expansivity.

What is the unit of co-efficient of linear expansion.

What are the co-efficient of expansion of solid? How are they related?

Define co-efficient of linear expansion.Dose it depend on unit of length?

A large steel wheel is to be fitted on to a shaft of the same material. At 27 ^@C , the outer diameter of the shaft is 8.70 cm and the diameter of the central hole in the wheel is 8.69 cm. The shaft is cooled using ‘dry ice’. At what temperature of the shaft does the wheel slip on the shaft? Assume coefficient of linear expansion of the steel to be constant over the required temperature range: a_ steel = 1.20 xx 10^-5K^-1 .

Does the co-efficient of linear expansion depend on the scale of temperature and unit of length?

Show that the area of the circumcircle of any square is twice the area of its in circle.

A metal bar of length L area of cross section A, Young's modulus Y and coefficient of linear expansion a is clamped between two stout pillars. What is the force exerted by the bar when it is heated through t ^@C ?

What is meant by the co -efficient of thermal conductivity of a material?state its unit and dimension.

Show that the value of co-efficient of friction is greater than frac(1)(3) tan theta for a cylinder rotationing in an inclined in an inclined plane without slipping.

Define moment of inertia of a body capable of rotation about an axis. Show that the moment of inertia of a body an axis is numerically equal to twice its kinetic energy if it rotates with unit angular velocity.