An essentially spherical boulder the size of several houses sits precariously on a slope above a village, as shown in figure N9.5. If this boulder ever gets loose, will it hit the village? (Hint: First estimate the speed with which the boulder will roll off the cliff. Show that the total center-of-mass kinetic plus rotational energy of a rolling spherical object is :
An essentially spherical boulder the size of several houses sits precariously on a slope above a...