Hi
Need help on a few questions:
1) The equation of motion of a mass (on the end of a vertical spring) subject to an "input force" (which causes a forced motion) is
Find y given that when t=0, y=0 and y' = 0
I get
Mr F says: Does this 'solution' satisfy y' = 0 ....? If you post your calculations, your mistake(s) can be pointed out.
book's answer is
2) a) A particle moving in a straight line has displacement x, velocity v and acceleration a at time t, where
. These formulas can be used to find v given a. The former is used when v is required in terms of t, the latter for v in terms of x.
b) A particle moves with retardation proportional to its velocity, ie, a = -kv, and has initial velocity
and initial displacement 0. Find the velocity (i) in terms of time; and (ii) in terms of the displacement.
How would i do this question?
P.S