An object with a mass of #8 kg# is hanging from a spring with a constant of #9 (kg)/s^2#. If the spring is stretched by # 14 m#, what is the net force on the object?

Question

1664 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2017-03-28T11:58:09

The net force is #=47.6N#

enter image source here

Let's resolve in the vertical direction #uarr^+#

mass, #m=8kg#

spring constant, #k=9kgs^-2#

extension of the spring, #x=14m#

#F_1=kx=9*14=126N#

#F_2=-8g=-78.4N#

The net force is

#F=F_1+F_2=126-78.4=47.6N#

The force is acting upwards.