The lesson we learn from coupled pendulums is that they are bound together,
and how they influence each other. In the same way we are influenced
by other people and this could easily draw us away from God.
Materials You Need:
Three pieces of soft rope about a metre in length.
Small screw hooks.
A hand-drill with a 1mm drill bit.
Two solid hockey balls.
Drill a small hole in the hockey balls and insert a small screw hook into both.
Tape two pieces of rope to a table top as shown in the figure and
attach the other ends to the screw hooks on the hockey balls and allow them
to dangle as pendulums. At the right time tie the third piece of rope
to the two pendulums about one third of the way down on each side of the
By taking advantage of resonance, you can cause the two pendulums to swing in
identical cycles. This represents us being influenced by pleasures
in the world and being drawn away from God.
Performing the Effect:
- Demonstrate how the pendulum balls swing in their own patterns but do
not influence each other.
- Now allow the pendulum balls to come to rest and tie the third piece of
rope to the two pendulums about one third of the way down on each side of
the vertical ropes.
- Carefully swing one ball sideways in the same plane as the other ball.
As it swings it will start to swing the second ball as the cross-rope
pulls it in the same direction as the first ball.
- Eventually, the second ball will take over and begin to swing the first
ball in the same manner.
- This alternate swinging will continue for quite some time since the two
pendulums are coupled together.
2 Timothy 1:12.
Influence of Others
Children are often drawn away from God, especially as they get older, by their
friends, peer pressure and pleasures of this world. Things such as
discos, raves, alcohol, drugs, music, video games and unsuitable magazines
and TV programmes weaken their faith and eventually draw them away from God.
We must remember that time is ticking away. (Start the
right-hand pendulum swinging).
Busy with Pleasures
Jesus is coming soon, but will we be ready to meet Him, or will we be too
busy with pleasures of this world? We can show this by using another
rope to couple the two pendulums together. (Tie a rope to both
pendulum ropes about 1/3 down from the table top). Let's set the
one ball swinging again. (Start the right-hand pendulum
swinging). This ball represents the world and it's pleasures.
While the other ball representing ourselves is stationary. After
a time the first ball will start to pull the second ball and get it swinging
Don't Love the World:
The pendulums show how easily we can be drawn into the things of the world.
Our Christian lives will soon go cold and we will stop reading the
Bible and praying to God. We will loose our desire to serve God and
will be bored and uninterested in Sunday School or church (even if we ever
get there!) This is what the world can do to our Christian lives if
we keep on seeking wrong things. In 1 John 2:15 we are reminded of
"Do not love the world or anything in the world.
If anyone loves the world, the love of the Father is not in him."
Don't be Like the World:
Unfortunately our coupled pendulums also show us that the influence of
worldly friends and things will soon draw us away from God and into the
pleasures of the world. In Romans 12:2 Paul warns about this:
"Do not conform any longer to the pattern of this world,
but be transformed by the renewing of your mind.
Then you will be able to test and approve what God's will is
His good, pleasing and perfect will."
Don't Love the World:
We need to pray for each other that God's power will grip our souls.
Like the Apostle Peter, we need to come to know Jesus and have a heart and
life changing experience. Pray that the Holy Spirit will fill your
lives so that He can set His seal on you, and keep you safe on that narrow
path that leads to Heaven and Glory. Remember to be like the Apostle
Paul and claim what he said in 2 Timothy 1:12 for your life:
"I know Whom I have believed, and am persuaded that He is able
to keep that which I have committed unto Him against that day."