Table of Contents
What are the key parts of a pendulum clock?
The movements of all mechanical pendulum clocks have these five parts: A power source; either a weight on a cord or chain that turns a pulley or sprocket, or a mainspring. A gear train (wheel train) that steps up the speed of the power so that the pendulum can use it.
How do you make a clock with cardboard?
Clock design instructions: Flip the plates upside down on the cardboard and trace them with pencil onto the cardboard. Then, cut the circles out. Glue colored construction paper onto the front to make the face of the clock. Use a ruler and start by marking 12, 3, 6, and 9 on the small circle.
How can I make my pendulum faster?
Adjusting the speed of the clock is accomplished by moving the pendulum disk (bob) up or down. The longer you make the pendulum, the slower the grandfather clock. The shorter you make the pendulum, the faster the grandfather clock.
What are the 3 parts of a pendulum?
What are the parts of a pendulum? A pendulum consists of a fixed point, string or wire, and a bob or weight.
What keeps a pendulum swinging?
The science behind the pendulum is explained through the forces of gravity and inertia. The Earth’s gravity attracts the pendulum. This means that since the pendulum is now in motion, it keeps moving, unless there is a force that acts to make it stop. Gravity works on the pendulum while it is moving.
What is the crutch in a pendulum clock?
The crutch is the wire part fixed to the clock at the back of the movement, usually bent at a right angle at the bottom, with a rectangular hole in it for the pendulum rod to slide through. If you touch it you will see it can move from side to side through an arc.
How do you hang a pendulum on a wall clock?
Hang the clock on a securely mounted hook or screw on the wall. Hang the pendulum on the pendulum leader (a small brass or steel strap or a wire bent to form a hook) that hangs below the clock movement. Weights are usually hung with the lightest weight on your left and the heaviest weight on your right.
How does pendulum clock works?
As it swings from side to side, it rocks a lever called an escapement that locks and then unlocks the part of the mechanism driven by the falling weight. Since (in theory, at least) a pendulum of a certain length always takes the same amount of time to swing back and forth, the pendulum is what keeps the clock to time.
How do you make a pendulum clock slower?
To slow down the clock, loosen the adjustment nut (turn it toward your left). The bob will settle lower, making the effective length of the pendulum longer. The clock will run slower. To speed up the clock, tighten the nut (turn it toward your right).
What does F and S mean on a clock?
The clock can be made to go faster or slower by means of the small square on the dial. Turning it toward F speeds up the clock, and turning it toward S slows it down. The regulating square is turned with the small end of the winding key.
Does adding weight to a pendulum slow it down?
When you add a weight to the bottom of the pendulum on the right, you make it heavier. When you add a weight to the middle of the other pendulum, however, you effectively make it shorter. Shorter pendulums swing faster than longer ones do, so the pendulum on the left swings faster than the pendulum on the right.
What holds a pendulum?
These forces are inertia, gravity and air resistance. When a pendulum is set into motion, inertia keeps it moving. Gravity is the force that draws the pendulum back from the direction that inertia takes it in. Air resistance is the force that causes the pendulum to swing back and forth in shorter and shorter arcs.
What does a pendulum hang from?
A pendulum is an object hung from a fixed point that swings back and forth under the action of gravity. The swing continues moving back and forth without any extra outside help until friction (between the air and the swing and between the chains and the attachment points) slows it down and eventually stops it.
What is the end of a pendulum called?
It may be called a “bob” because its vertical position “bobs” up and down while its horizontal motion moves side to side. Pendulum Pivot. The pendulum string is attached to the overhead support by the pivot.
Why won’t the pendulum swing on my clock?
Make sure the clock hands are not touching the glass. The reason a clock pendulum often stops swinging, after being moved, is because the clock case now leans at a slightly different angle then it did at its former location. Don’t worry about making your clock absolutely level with the floor and don’t use a level.
How do you make a simple pendulum?
What to do: Tie a weight onto the end of the piece of string. Make a loop at the other end of the string. Screw the hook into the piece of wood and balance the wood between the backs of two chairs. Put the loop of string over the hook. Start the weight swinging and time how long it takes to make 20 swings.
Do pendulum clocks need batteries?
Little did I know back then, but pendulum clocks don’t need batteries at all! It may seem like it’s just idling around, serving no real purpose as it swings to and fro, but that action is actually what keeps the clock accurate to the second.
How do you bend a clock with a crutch?
Raise one side of the clock at a time ( for wall clocks – move the bottom of the clock to first one side then the other). Note which side, when raised, brings the clock into beat. Bend the crutch of the pendulum carefully towards this side. Repeat as necessary.
How do you attach a pendulum to a mantle clock?
Attach the pendulum to the suspension bar on the back of the movement and then gently hold the pendulum to one side and release. (Alternatively once the pendulum is attached you can gently lift one side of the clock and then lower it to enable it to swing). Listen to the clock.
