hk kekekalan energi

This animation shows a typical ballistic pendulum apparatus. In this situation, the bullet does not embed in the target, it passes through, emerging on the other side with a somewhat reduced speed as some of its momentum and energy are transferred to the target. Ballistic pendulums are often used to determine the speed of bullets.




This animation shows two masses undergoing a head-on collision. The graph shows how the force acting on each mass varies with time during the interaction. Notice that the masses experience equal magnitude but oppositely directed forces (according to Newton's Third Law) during the interaction. The area under the force [F(t)] versus time [t] graph for either mass (i.e. the yellow or blue shaded area) gives a measure of the Impulse or change in momentum imparted to each mass during the collision.


This animation shows how the distribution of mechanical energy, E, changes between kinetic energy (energy of motion, K) and potential energy (energy of position, U) as a mass undergoes simple harmonic motion, oscillating at the end of a spring.




Ecommons::Research