What is the function of the wire in
an electric circuit?
a. the wire is where the energy comes from in
the circuit.
b. the wire is how the electrons get from one
place to another.
c. the wire is whatever is receiving the energy in
the circuit.
d. the wire safely opens and closes the circuit.
so much : )

Aspring is used to stop a 50-kg package which is moving down a 20º incline. the spring has a constant k = 30 kn/m and is held by cables so that it is initially compressed 50 mm. knowing that the velocity of the package is 2 m/s when it is 8 m from the spring and neglecting friction, determine the maximum additional deformation of the spring in bringing the package to rest.