1. Acceleration of a Cup and Cloth
2004 AP Physics Workshop, Ted Vittitoe

2. L The cloth is then pulled out from under the cloth
Cup and Cloth
A cup is placed on the cloth in the middle of the table. L
The cloth is then
pulled out from
under the cloth
2004 AP Physics Workshop, Ted Vittitoe

3. Find the minimum acceleration of the cloth which leaves the
Cup and Cloth
Find the minimum acceleration
of the cloth which leaves the
cup on the table.
m between
cup and cloth
2m between
cup and table
a(min)
2004 AP Physics Workshop, Ted Vittitoe

4. L a Distance the cup moves
Cup and Cloth
When the cup leaves the cloth L a
Distance the
cup moves
2004 AP Physics Workshop, Ted Vittitoe

5. Acceleration of the cup
Distance cup moves during the acceleration
Solve (2) for t2
2004 AP Physics Workshop, Ted Vittitoe

6. Distance cloth moves during the acceleration
Substitute (3) into (4)
2004 AP Physics Workshop, Ted Vittitoe

7. END
2004 AP Physics Workshop, Ted Vittitoe