Question

URGENT: Using Hooke's law, find the force needed to stretch a spring 2 cm if it has an elastic constant of 3 N/cm

A 6 N
B 3 N
C 2/3 N
D 3/2 N

Answer 1

Answer : A (6 N)

we know that

from Hook's law , F = k.x

where, F = force applied on spring 9N)

k = spring constant (N/cm)

x = distance of spring stretched (cm)

Therefore,

F = 2 × 3

F = 6 N