A small bead with a mass m = 15.0 g slides along the frictionless wire form shown in the figure. The three heights hA = 7.70 m, hB = 5.50 m, and hC = 2.90 m are all measured from the floor. The bead is released from rest at point A.
a) What is the speed of the bead at points B and C?
| vB | = ____ m/s |
| vC | = ____ m/s |
(b) What is the net work done on the bead by the force of gravity
as it moves from point B to C?
____ J
EXAMPLE:
A small bead with a mass m = 10.0 g slides along the frictionless wire form shown in the figure. The three heights hA = 7.00 m, hB = 5.50 m, and hC = 3.00 m are all measured from the floor. The bead is released from rest at point A.
a) What is the speed of the bead at points B and C?
| vB | = 5.42 m/s |
| vC | = 8.85 m/s |
(b) What is the net work done on the bead by the force of gravity
as it moves from point B to C?
0.245 J
Homework Answers
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A small bead with a mass m = 15.0 g slides along the
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8.2
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