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A simple pendulum makes 140 complete oscillations in 2.50 min at a location where g = 9.80 m/s2.
(a) Find the period of the pendulum.
s
(b) Find the length of the pendulum.
m
A 17g rifle bullet travelling 220 m/s buries itself in a 3.90 kg pendulum hanging on a 3m long string, which makes the pendulum swing upward in an arc. Find out the vertical and horizontal components of the pendulum's displacement.
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An 82.0 kg-diver stands at the edge of a light 5.00-m diving board, which is supported by two pillars 1.60 m apart, Find the force exerted by pillar A
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