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 :  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

the moon affects the earth gravitation ally, causing certain motions of that body and also producing tides in its ocean and atmosphere. the tidal wave in our atmosphere is, however, far too minute to be an effective cause in any known meteorological phenomenon.

explanation:

a displacement distance is size of displ