Three Physics Questions?
Questions I couldnt figure out
A common thread spool rests on a flat table. You gently pull at an angle on a short piece of thread wrapped around the spool, which causes the spool to slide without rotating. With the thread at this angle, the lever arm is _____.
a. perpendicular to the applied force
b. small, but not zero, and the torque is zero
c. small and the torque is also small
d. none of the above
A 3-kg ball is whirled on the end of a string that is 2 m long. The ball's linear speed is 4 m/s. What is its angular momentum?
a. 2 kg·m·m/s
b. 6 kg·m·m/s
c. 8 kg·m·m/s
d. 24 kg·m·m/s
e. 48 kg·m·m/s
f the planet Jupiter underwent gravitational collapse, its rate of rotation about its axis would _____.
a. decrease
b. increase
c. stay the same
d. More information needed.
1) a
2) 12 kgm/sec
3) b
48 Yoshi's Island (Super Mario World 2) [Part 48], 6-7: KEEP MOVING!!!!
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