A uniform disc of mass M and radius R rotating with angular frequency ? in it's own plane, is gently placed on another identical disc fixed to a horizontal table. If coefficient of friction b^n the surfaces be µ, calculate rate at which temp. of two disc system increases with time.Assume no loss of heat to surroundings. [Specific heat of material of disc=s]
A uniform disc of mass M and radius R rotating with angular frequency ? in it's own plane, is gently placed on another identical disc fixed to a horizontal table. If coefficient of friction b^n the surfaces be µ, calculate rate at which temp. of two disc system increases with time.Assume no loss of heat to surroundings. [Specific heat of material of disc=s]