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Posted by **Vladimir** on Saturday, June 2, 2012 at 12:07am.

(a) Find the mechanical energy of the system.

(b) Find the speed of the mass when it has moved 9 cm.

(c) Find the maximum speed of the mass.

- Physics -
**Delbarre**, Saturday, June 2, 2012 at 1:17amthis case the energy of sistem is

conservation of energy:

(1/2)kx² = (1/2)mv² then you can find the energy of springs, this energy would be the energy of total sistem because no exist friccion.

the maximum velocity of the mass v= square root((kx²)/ m)

the speed when it has moved 9 cm

x=(26 -9) =17cm this x replaces in this formula.

enjoy the answer

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