- #1
Mary1910
- 31
- 1
A 12kg mass undergoes simple harmonic motion with an amplitude of 10cm. If the force constant for the spring is 320N/m:
a) Calculate the total energy of the mass spring system.
Et=½kA^2
=½(320N/m)(0.1m)^2
=1.6 Jb) Calculate the maximum speed of the mass.
Et=½mv^2 + ½kx^2
1.6 J = ½(12kg)v^2 + 0
v^2 = (3.2/12)
= √0.2667 m/s
=0.52
=5.2 x 10^-1c) Calculate the speed of the mass when it is 5.0 cm from the equilibrium point.
And this one I'm not entirely sure...
do I use a= (kx) / (m) ?
a) Calculate the total energy of the mass spring system.
Et=½kA^2
=½(320N/m)(0.1m)^2
=1.6 Jb) Calculate the maximum speed of the mass.
Et=½mv^2 + ½kx^2
1.6 J = ½(12kg)v^2 + 0
v^2 = (3.2/12)
= √0.2667 m/s
=0.52
=5.2 x 10^-1c) Calculate the speed of the mass when it is 5.0 cm from the equilibrium point.
And this one I'm not entirely sure...
do I use a= (kx) / (m) ?