Illustrate the law of conservation of energy by discussing the energy changes which
occur when we draw a pendulum bob to one side and allow it to oscillate. Why does the
Bob eventually come to rest? What happens to its energy eventually? Is it a violation of
the law of conservation of energy?
Ans. In the case of pendulum energy in the Bob at any instant of time, can be either potential
Answers
Answer:
In the case of pendulum energy in the Bob at any instant of time, can be either potential.
Explanation:
In the case of pendulum energy in the Bob at any instant of time, can be either potential
energy (P.E) or kinetic energy (K.E) or a mixture of both but its total energy at any instant of
time remains constant. This can be illustrated by below illustration in the figure.
In case of pendulum energy in the Bob at any instant of time
when the pendulum Bob is at position B.It has only potential energy(P.E) and no kinetic
energy(K.E)
As the Bob starts moving from position B to position A potential energy(P.E) decreases but
Kinetic Energy(K.E) increases
when the Bob reaches position A, there is only kinetic energy(K.e) but no potential
energy(P.E)
As Bob moves from position A to position C, potential energy(p.E) increases but kinetic
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