Suppose several particles are in concentric circular orbits under the influence of some centripetal component of force, the magnitude of which depends on distance from the center of the motion. each particle has a different orbital radius r and a corresponding period t. how does the force depend on r if t is proportional to sqrt(r) ?
how does the force depend on r if t is proportional to r^3/2 ?
how does the force depend on r if t is independent of r ?

This problem has been solved! see the answera non-uniform fire escape ladder is 6.0m long whenextended to the icy alley below. it is held at the top by africtionless pivot, and there is neglibible frictional force fromthe icy surface at the bottom. the ladder weighs 250n, and it'scenter of gravity is 2.0m along the ladder from the bottom. amother and child of total weight 750n are on the ladder 1.5m fromthe pivot. the ladder makes an angle θ with the horizontal. find the magnitude and direction ofa) the force exerted by the icy alley on the ladderb) the force exerted by the ladder on the pivotc) do your answers in part a and b depend on the angle?

Clothes dryer uses about 7 amps of current from a 240 volt line. how much power does it use?

Under normal conditions, describe how increasing the temperatures effects the solubility of a typical salt