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isabella4141
28.01.2021 •
Physics
A seconds pendulum is one that passes through its equilibrium position once every 1.000 s.
Part A
What is the period of a seconds pendulum?
Express your answer to four significant figures and include the appropriate units.
Part B
A seconds pendulum in Chicago has a length of 0.9933 m. What is the acceleration due to gravity in Chicago?
Express your answer to four significant figures and include the appropriate units.
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Ответ:
Given,
The initial position of the boat, d_i=(5i-2j+4k) m
The initial velocity of the boat, u=(4i+j-3k) m/s
The time period, t=8 s
The final velocity of the boat, v=(12i-7j+13k) m/s
To find:
a) The position of the object after 8 s
b) The acceleration of the object.
Explanation:
a)
From the equation of motion, the total distance traveled by the object is given by,
On substituting the known values,
Thus the final position of the boat is,
b)
The acceleration of an object is given by,
On substituting the known values,
Final
a) Thus the position of the boat after 8 s is
The acceleration of the boat is