In: Physics
For the following situations, determine whether the energy of
the given system is the same at the initial and final states
indicated (i.e., is the energy of the system constant or
not).
0pts
0pts
A block is hung from a spring that is vertical and connected to the
ceiling. The block is made to oscillate vertically. Call the
initial state when the block is at its highest position and the
final state when the block is at its equilibrium position.
Energy of the system is constant Energy of the system is not
constant System: block
Energy of the system is constant Energy of the system is not
constant System: block + ceiling (+ spring) +
Earth
Energy of the system is constant Energy of the system is not
constant System: block + Earth
A block on a table (friction between the table and the block is not
negligible) is attached to a wall via a spring that is horizontal.
You give the block a brief push so that the block travels
horizontally. Call the initial state when the spring first reaches
its maximum stretch in the initial direction of motion. The final
state is when the spring first reaches its zero stretch
length.
Energy of the system is constant Energy of the system is not
constant System: block + wall (+ spring) + table
Energy of the system is constant Energy of the system is not
constant System: block + wall (+ spring)
Energy of the system is constant Energy of the system is not
constant System: block + table
Energy of the system is constant Energy of the system is not
constant System: table
Energy of the system is constant Energy of the system is not
constant System: block
1pts
Incorrect. | Tries 7/15 | Previous Tries |
A block on a table (friction between the table and the block is not
negligible) is attached to a wall via a spring that is horizontal.
You give the block a brief push so that the block travels
horizontally. Call the initial state when the spring first reaches
its maximum stretch in the initial direction of motion. The final
state is when the spring first reaches its zero stretch length.
Energy of the system is constant Energy of the system is not
constant System: block + wall (+ spring) + table
Energy of the system is constant Energy of the system is not
constant System: block + wall (+ spring)
Energy of the system is constant Energy of the system is not
constant System: block + table
Energy of the system is constant Energy of the system is not
constant System: table
Energy of the system is constant Energy of the system is not
constant System: block