Note that since xcritical, as computed in the previous part, is not necessarily positive. if xcritical< 0, the bar will be stable no matter where the block of mass m2 is placed on it.

assuming that m1, d, and l are held fixed, what is the maximum block mass mmax for which the bar will always be stable? in other words, what is the maximum block mass such that xcritical? 0?

answer in terms of m1, d, and l.

The ozone hole appears in antarctica during

Consider a system with two masses that are moving away from each other. why will the kinetic energy differ if the frame of reference is a stationary observer or one of the masses?

At a certain instant after jumping from the airplane a, a skydiver b is in the position shown and has reached a terminal (constant) speed vb = 52 m/s. the airplane has the same constant speed va = 52 m/s, and after a period of level flight is just beginning to follow the circular path shown of radius ρa = 2330 m. (a) determine the velocity and acceleration of the airplane relative to the skydiver. (b) determine the time rate of change of the speed vr of the airplane and the radius of curvature ρr of its path, both as observed by the nonrotating skydiver.