Physics, 18.07.2020 23:01 CoolRahim9090
A 0.20-kg block rests on a frictionless level surface and is attached to a horizontally aligned spring with a spring constant of 40 N/m. The block is initially displaced 4.0 cm from the equilibrium point and then released to set up a simple harmonic motion. A frictional force of 0.3 N exists between the block and surface. What is the speed of the block when it passes through the equilibrium point after being released from the 4.0-cm displacement point
Answers: 1
.
away from the equilibrium position:
.Kinetic energy: 
.
.
) of that value would be the amount of energy lost to friction. Since there's no other form of energy loss, the mechanical energy of the block at the equilibrium position would be 
.
of mechanical energy would all be in the form of the kinetic energy of that block.
.
, calculate its speed:
. 
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