Posted by Heather on Friday, November 12, 2010 at 3:55pm.
Can you vary the ramp? If so, start horizontal,and see at what angle the ball starts to roll.
no, its a metal ramp, and only works one way. Its straight most of the way at an angle of about 37 degrees, and at the bottom, it curves and is parallel to the table so tht the ball will fly off the edge.
ok,easy then.
find where it strikes the ground. Measure the height of the table, the height above the table at the top of the ramp,and the distance horizontal it traveled from the table edge.
Look at energy first:
Initial PE above table-friction*ramplength=1/2 mv^2 at launch.
now look at the air ball.
horizontaldistance=v*time
vertical drop>> t= sqrt (2g*table height).
Ok, work back to find frictionforce.
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