Question

A body rests in equlibrium upon another fixed body the portions of the two
bodies in contact being spheres of radii r and R respectively and the straight line.
joining the centres of the sphere being vertical, if the first body be slightly
displaced, find whether the equilibrium is stable or unsstable, the body being rough​

Answer 1

Answer:

Lever at equilibrium .

The principle of the lever tells us that the lever is in static equilibrium, with all forces balancing, if F1D1 = F2D2. In order to lift a bigger load (F2) the distance to the fulcrum has to increase (D1) or the distance D2 has to decrease.Mar 20, 2009