If you know that the period of a pendulum is 1.87 seconds, what is the length of that pendulum? (Assume that we are on Earth and that gravity is 9.81 meters/second².)
Select one of the options below as your answer:

A.
0.87 centimeters
B.
2.1 meters
C.
1.6 meters
D.
0.87 meters
E.
8.3 meters

Question

If you know that the period of a pendulum is 1.87 seconds, what is the length of that pendulum? (Assume that we are on Earth and that gravity is 9.81 meters/second².)
Select one of the options below as your answer:

    A.
    0.87 centimeters
    B.
    2.1 meters
    C.
    1.6 meters
    D.
    0.87 meters
    E.
    8.3 meters

anonymous · Answer

$$\color{green}{T = 2 \pi \sqrt{\frac{l}{g}}}$$
Solve for l.