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IP Suppose the pendulum bob in the figure(Figure 1) has a mass of 0.43 kgkg and is moving to the right
at point B with a speed of 2.8 m/sm/s. Air resistance is negligible.
Figure
▾
Part A
What is the change in the system's gravitational potential energy when the bob reaches point A?
Express your answer using two significant figures.
VG AZO
AU-
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▾ Part B
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▾ Part C
What is the speed of the bob at point A?
Express your answer using two significant figures.
VAZO?
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1.2 m
O decreases
?
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J
If the mass of the bob is increased, does your answer to part (a) increase, decrease, or stay the same?
m/s

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