Theorem of work and energy says:
the sum of all jobs acting on a body is equal to the kinetic energy
vaciacion experiencing
the reference is considered lower
Part A
The forces that do work on the ball are:
work done by the weight.
where:
mass ball
acceleration of gravity
variation of height
Finally
organizing
Work done by the spring force
the net work on the ball is
but also net work is equal to the change in kinetic energy
It is zero. at the bottom starts from rest at the top and stays momentarily at rest
expression for
finally
part B
It applies the theorem of work and energy again.
In this case the
The forces that do work on the ball are:
work done by the weight.
where:
mass ball
acceleration of gravity
variation of height
Finally
Work done by the spring force
the net work on the ball is
but also net work is equal to the change in kinetic energy
the velocity is zero at the start
now
expression for the velocity
simplifying
A spring with spring constant k is positioned vertically and then compressed from its equilibrium length...
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