contestada

A rubber band with an unknown spring constant is stretched by 100cm with a force of 0.2kN. Calculate the spring constant of the rubber band. Hence, also calculate the work done on the rubber band.

Respuesta :

MathPhys

Answer:

200 N/m

100 J

Explanation:

Hooke's law states that the force to stretch a spring is equal to the spring constant times the displacement.

F = kx

200 N = k (1.00 m)

k = 200 N/m

The elastic energy stored in a spring is:

EE = ½ kx²

EE = ½ (200 N/m) (1.00 m)²

EE = 100 J