A 10-kg mass,hung by an ideal spring,causes the spring to stretch 2.0 cm.What is the spring constant (force constant)for this spring?
A)5.0 N/cm
B)49 N/cm
C)0.20 N/cm
D)20 N/m
E)0.0020 N/cm

Question

Quizplus · Accepted Answer

The spring constant (k) can be calculated using the formula k=F/x, where F is the force applied and x is the displacement. In this case, the force applied is the weight of the mass, which is F = m*g = 10*9.8 = 98 N (taking g as 9.8 m/s^2). The displacement is given as x = 2.0 cm = 0.02 m. Therefore, k = 98/0.02 = 4900 N/m = 49 N/cm. The best choice is B.

A 10-Kg Mass,hung by an Ideal Spring,causes the Spring to Stretch