A paper placed in between two books can be quickly pulled out without moving the books. Which statement explains this phenomenon? A.
There are no forces acting between the books and the paper.
B.
The pull of gravity on the book is greater than the force of gravity on the paper.
C.
The two books exert force only on each other and not on the paper.
D.
The books have a great deal of inertia and do not move easily.

Suppose that a mass of 2 kg is attached a spring whose spring constant is 50. the system is damped such that b = 12 . the mass is set in motion with an initial velocity of -8 m/s at a position 0 meters from equilibrium. set up and solve a differential equation that models this motion. write your solution in the form a cos ( ω t − α ) where α is a positive number. use your solution to fill in the information below: what is the amplitude of the motion? what is the value of ω ? what is the phase shift?