A horizontal block-spring system with the block on africtionless surface has total mechanical energy E = 56.0J and a maximum displacement from equilibrium of 0.258 m.
(a) What is the spring constant?
N/m
(b) What is the kinetic energy of the system at the equilibriumpoint?
J
(c) If the maximum speed of the block is 3.45 m/s, what is itsmass?
kg
(d) What is the speed of the block when its displacement is 0.160m?
m/s
(e) Find the kinetic energy of the block at x = 0.160m.
J
(f) Find the potential energy stored in the spring when x= 0.160 m.
J
(g) Suppose the same system is released from rest at x =0.258 m on a rough surface so that it loses 15.2 J by the time itreaches its first turning point (after passing equilibrium atx = 0). What is its position at that instant?
m
