A350 kg mass, constrained to move only vertically, is supported by two springs, each having a spring constant of 250 kn/m. a periodic force with a maximum value of 100 n is applied to the mass with a frequency of 2.5 rad/s. given a damping factor of 0.125, the amplitude of the vibration is

When a book falls from a shelf to the ground without anyone pushing on it, no work is done on the book. true or false

The desk has a weight of 75 lb and a center of gravity at g. determine the initial acceleration of a desk when the man applies enough force f to overcome the static friction at a and b. also, find the vertical reactions on each of the two legs at a and at b. the coefficients of static and kinetic friction at a and b are ms = 0.5 and mk = 0.2, respectively

What will a positive and a negative charge do if they are separated from each other?