A mass of 0.5 kg is attached to a horizontal massless spring with spring constant k = 100 N/m. It's displaced 15 cm to the right of its equilibrium position and released from rest. It slides across a rough surface and comes momentarily to rest a distance of 10 cm to the left of its equilibrium position.
a/ Find the potential energy of the spring/mass system when it's displaced 15 cm. (I got 1.125 Nm.)
b/ Find the potential energy of the spring/mass system when it's displaced 10 cm. (I got 0.5 Nm.)
c/ How much work has been done by the frictional force as the mass slides from the 15 cm to the 10 cm position on the other side of the equilibrium position. (I got -0.625 Nm.)
d/ Find the coefficient of kinetic friction between the surface and the mass? (Is it 0.223?)
e/ Find the mass's kinetic energy as it slides through the equilibrium position.
a/ Find the potential energy of the spring/mass system when it's displaced 15 cm. (I got 1.125 Nm.)
b/ Find the potential energy of the spring/mass system when it's displaced 10 cm. (I got 0.5 Nm.)
c/ How much work has been done by the frictional force as the mass slides from the 15 cm to the 10 cm position on the other side of the equilibrium position. (I got -0.625 Nm.)
d/ Find the coefficient of kinetic friction between the surface and the mass? (Is it 0.223?)
e/ Find the mass's kinetic energy as it slides through the equilibrium position.