What is the primary force help suspension bridges use cables to hold there spans up
2 answers:
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Answer:
0.7945 Hz
Explanation:
Data provided in the question:
Length of the arm = 0.59 m
Since the center of mass lies at about of its length
Thus,
Length of the simple pendulum = × 0.59 m = 0.3933 m
Now,
Frequency of vibration, f =
Thus,
we have,
Frequency of vibration for the arm =
or
Frequency of vibration for the arm = 0.7945 Hz
Explanation:
use the diagram^
horizontal velocity of the object nvr changes, it'll stay 50m/s till it hits the ground
initial vertical velocity = 0
to find the final vertical velocity, use the formula:
where u = 0m/s, a = 9.8m/s², and s = 2000m
solve for v.
for time taken to reach ground, use the formula:
where v = the value for v u calculated above, u = 0 m/s, a = 9.8m/s² and solve for t.
