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Discussion and calculations of compound pendulum due to gravity?
Wiki User
∙ 12y ago
DISCUSSION
From the experiment, I found that there are several differences in between theoretical values and experimental values that being obtained. These differences should not be so obvious. The values supposed to be not much in difference as the experimental and theoretical values should be almost the same. By my inference, there are several factors that influenced these differences. One of the main factors that often occur in any experiment including this experiment is inconsistency while values are taken. Firstly, the hinge where the pendulum is hang is an 'allen key' and have 6 surfaces which is not smooth. Thus, the pendulum cannot swing smoothly compared if the hinge used is a smooth circular rod. While the pendulum is released, the angle where the pendulum is released is not accurate. The angle of released are not always the same each time, even the angle supposed to be at since the measurement of the angle is only depended on the protactor which is hold next beside the pendulum. Moreover, the angle is observed with our eyes and at different position. Thus, accuracy in this matter is questionable. Other than that, the time taken for the pendulum swing is also questionable as it is observed also with our eyes. The point where the pendulum starts and ends after ten consecutive swings are not really exact as we cannot really measure when the pendulum change it direction to a reversed swing. The time taken when the pendulum completed ten swin9gs is also not accurate. Even this matter seemed to be unreliable, actually it affects our readings a lot when it comes to calculation. Besides that, the area where this experiment is held is close to the laboratory entrance door and wind is also the factor for the pendulum to swing inconsistently as the wind speed changes all the time. There are times when wind blows quite fast and there are times when no wind blows at all. Thus, all of the factors above do influence the readings taken throughout this experiment and that is why the results vary in some way.
Wiki User
∙ 12y ago
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How does gravity affect a pendulum?
Very little affect. The weight is chosen by: 1) Won't require enormous bearings, or clockworks. 2) Heavy enough so that air resistance is not the dominant force. 3) Not so heavy that the Earth's rotation will not break the clock. etc.
Why does a swinging pendulum lose energy once it is set into motion?
When a pendulum is released to fall, it changes from Potential energy to Kinetic Energy of a moving object. However, due to friction (ie: air resistance, and the pivot point) and gravity the pendulum's swing will slowly die down. A pendulum gets its kinetic energy from gravity on its fall its equilibrium position which is the lowest point to the ground it can fall, however, even in perfect conditions (a condition with no friction) it can never achieve a swing (amplitude) greater than or equal to its previous swing. Every swing that the pendulum makes, it gradually looses energy or else it would continue to swing for eternity without stopping. Extra: Using special metals that react little to temperature, finding a near mass-less rod to swing the bob (the weight) and placing the pendulum in a vacuum has yielded some very long lasting pendulums. While the pendulum will lose energy with every swing, under good conditions the amount of energy that the pendulum loses can be kept relatively small. Some of the best pendulum clocks can swing well over a million times.
Why do all pendulums swing at the same speed?
Most pendulums are operated by a spring, when the spring looses its tention it can no longer keep the pendulum swinging. Others may work on a different system but the system in not perpetual and will loose its ability to keep the pendulum swinging. As a point of interest you canot use a pendulum in space.
Why does a pendulum move from side to side?
A swinging Foucault Pendulum will change its direction 360° over a 24-hour period as Earth rotates on its axis. The motion of the pendulum is independent of Earth motions. The pendulum actually swings in the same direction it is Earth that rotates beneath the pendulum.
What is the specific gravity for aluminum?
Aluminum has no specific gravity, at least by the current definition of gravity.
Discussion of the measurement of gravity by a bar pendulum?
You can use a simple pendulum, measure how long one period takes, then use the formula for a pendulum, and solve for gravitational acceleration.
What is the period of compound pendulum when pivot point and centre of gravity of a body is same?
it become zero
What will happen to value of g if compound pendulum is taken nearer to the centre of the earth?
The acceleration of gravity decreases as the observation point is taken deeper beneath the surface of the Earth, but it's not the location of the compound pendulum that's responsible for the decrease.
Why does a pendulum have periodic motion?
Gravity acts on the pendulum.
Does force affect a pendulum?
A pendulum is affected by the force of gravity.
To determine the value of g acceleration due to gravity by means of a compound pendulum?
you can also use a simple pendulum to do it. your brain is full of problems if you cant do it by the easier wayForget thatgo on to this site and it gives you a method/procedure also go through www.phy.iitkgp.ernet.in/1styr/11-compound-pendulum.pdf
How does gravity affect the pendulum to stop?
Gravity doesn't make a pendulum stop. Air resistance and friction in the pivot are the things that rob its energy. If you could eliminate those and leave it all up to gravity, the pendulum would never stop.
What is the significance of the simple pendulum?
The simple pendulum can be used to determine the acceleration due to gravity.
How can pendulum oscillate in vacuum even there is no gravity?
There IS gravity in a vacuum - there's no AIR.
Time period of a pendulum?
For a heavy weight on the end of a weightless string ("a simple pendulum") the period is 2.pi.squareroot(L/g) where L is the length of the string and g is the acceleration due to gravity. If the weight of the pendulum is not wholly at the end (as in a heavy rod instead of a light string) then replace L by k2/L where L is (as before) the distance to the centre of gravity below the suspension point, and k is the radius of gyration of the whole suspended part, inculding the arm of the pendulum as well as any weights ("compound pendulum").
What do the length of the cord and gravity determine for a pendulum?
They determine the length of time of the pendulum's swing ... its 'period'.
What are the effects of acceleration due to gravity on the time period of a pendulum?
The period of a pendulum (in seconds) is 2(pi)√(L/g), where L is the length and g is the acceleration due to gravity. As acceleration due to gravity increases, the period decreases, so the smaller the acceleration due to gravity, the longer the period of the pendulum.
