Athermometer has its stem marked in millimeters instead of degree celsius. the lower fixed point is 30mm, and the upper fixed point is 180mm. calculate the temperature im degree celsius when the thermometer reads 45mm.

Two steel balls, each of mass m, are welded to a light rod of length l and negligible mass and are initially at rest on a smooth horizontal surface. a horizontal force of magnitude f is suddenly applied to the rod as shown. determine (a) the instantaneous acceleration a of the mass center g and (b) the corresponding rate at which the angular velocity of the assembly about g is changing with time.