The oscillation frequency f cycles per second, of a spring is inversely proportional to the square root of the mass m kg of the spring. When m=2.56, f=2, how do you find f when m=4?

1 Answer
Jan 18, 2018

Answer:

#f =+-sqrt(2.56)#

Explanation:

#color(blue)("Determining the appropriate values")#
Inversely proportional #->a=k/b# where #k# is the constant of variation. So we have:

#f=1/(sqrt(m))xxk #

Initial condition:

#f=1/(sqrt(m))xxk color(white)("dddd") ->color(white)("dddd")2=1/sqrt(2.56)xxk#

So we have: #color(white)("d")->k=2sqrt(2.56)#
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
#color(blue)("Answering the question for "m=4)#

#f=1/(sqrt(m))xxk color(white)("ddd")-> color(white)("ddd") f=1/sqrt(4)xx2sqrt(2.56)#

# color(white)("dddddddddddddd")-> color(white)("ddd")f=1/(+-2)xx2sqrt(2.56)#

# color(white)("dddddddddddddd")-> color(white)("ddd")f =+-sqrt(2.56)#