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Catapult

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by

Kyla Rudd

on 18 March 2014

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Transcript of Catapult

Forms of energy
Energy Transformation
During the operation of the catapult, there are many different forms of energy being transformed into another. For example, some of the energy is transformed into heat energy or even sound energy. When the catapult is released, it quickly transforms from potential energy to kinetic energy. Then the kinetic energy is transformed into gravitational potential energy as the object flies into the air. One example where energy seems to disappears but actually transforms occurs when friction is acting on the spring.
Energy Transfer
PRICELESS
Tuesday, March 18, 2014
Vol 7, No. 14
Mechanical System
Breaking News: Crazy Catapult
A catapult is a device used to hurl items over a small or great distance, depending on the size. Catapults hurl items using stored energy. Most catapult hurls items using elastic energy because of the stretched spring. The stretched spring, also known as the arm, holds the tension. Then the catapult hurls the item through the air with an upward trajectory. A catapult is an open system since it exchanges matter and energy with the environment. When the catapult is launched, some of the energy released transfers into heat energy.
Conservation of Energy
Sources
The Catapult Tribune
Our catapult illustrates the law of conservation of energy because energy is never created or destroyed, only transform from one energy to another. For example, the elastic potential energy is transformed into kinetic energy because the arm is pulled back and the object hurls out of the catapult. Another example is when the gravitational potential energy is transformed into kinetic energy as the object flies into the air.
The different types of energy included in a catapult are kinetic and potential energy. Along with the different types of energy involved in a catapult, there is also several different forms of energy involved such as elastic, heat, sound and gravitational potential energy.

"Catapult Physics." Real World Physics Problems. N.p., n.d. Web. 13 Mar. 2014. <http://www.real-world-physics-problems.com/catapult-physics.html>.
Johnson, Ann. "How Does a Catapult Work?." eHow. Demand Media, 5 Nov. 2008. Web. 13 Mar. 2014. <http://www.ehow.com/how-does_4586404_a-catapult-work.html>.
"The Science behind the catapult." The Science behind the catapult. N.p., n.d. Web. 13 Mar. 2014. <http://webapps.yarmouth.k12.me.us/~mrice
Hsu, Thomas C. Foundation of Physical Science. Nashua: CPO Science, 2011.
Energy is transferred in the catapult due to
work.Work is involved during the operation
of the catapult because work is a form of
energy that come from force applied over a distance.When the catapult is launched it
has both potential and kinetic energy. The
force of catapult launches the object a certain distance depending on how much force is applied. When the catapult is moving some of the energy is transferred into
heat.
A catapult is a device in which accumulated tension is suddenly released to hurl an
object over a certain amount of distance.
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