'JI 2 . eardrum, oscillating Pendulum, etc. Remember how a spring works: when you pull on it, it stretches. Newton's 3rd Law of motion says that the spring pulls back on you too. If you pull the end of the spring in the + x direction with a force, F, in the +x direction, the spring stretches by an amount x. You know that the force has only an x component, and hence Fx = kx where Fx is the force applied, k is the force constant of the spring, and x is how much the spring stretches.(a) What are the physical + dimensions of the force constant, K? K= V N m 0 displacement time (b) What does Newton's 3rd Law say about the force that the spring must exert on the hand stretching it? (In one dimension start : you can use + to show direction.) when you pull the spring in tx direction, + the spring exerts a face in ( - ve) x direction on your hand. 3 . From your reading, if a mass, m, is attached to a spring of force constant k to make an oscillator, what formula gives the velocity 0 period of oscillation, T? time T= 2MV M 4. If the mass is released from rest at a negative displacement, sketch a graph of the displacement vs. time for the subsequent motion as a function of time for the interval 0