Roth+Lab+9+Phys

Lab 9 Physlets

Exploration 3.2 Velocity: 12.65 seconds Acceleration: infinity seconds
 * 1) I can run the gauntlet for position and velocity, but I cannot get through acceleration
 * 2) The acceleration control is the most difficult control to use because you have to stop the object and make its acceleration zero before you can make any turns.
 * 3) Position: 3.7 seconds

Illustration 3.2 The lower that you make the angle of an incline, the more you can decrease the effects of gravity. Effect of gravity= g sin(theta)

Exploration 4.2 The attraction forces bring the object closer to their locations, but the object goes past the location because it takes time for the negative acceleration to reduce the velocity to zero, so the object goes past the markers and goes towards them again. This keeps occurring until the negative acceleration reduces the velocity to zero. The repulsion forces push the object away from it. The repulsion force is not as strong as the object gets further and further away from the source of the force.

Exploration 4.3 a. The purple spheres somewhat represent repulsion. The attraction vectors bring the ball close to and past that point until it decelerates to a velocity of zero. The repulsion forces push the ball away from the desired location until it gets so far away that not enough force is exerted. b. The ball does not seem to always move as expected because when acceleration changes or turns negative, it does not always correspond with a change in direction. c. Attraction: 3.92 seconds Repulsion: 3.20 seconds