Question

What is the period of a 3. 98 m long pendulum? What is the period of a 99. 4 cm long pendulum?.

Answer 1

A pendulum's time period is the amount of time it takes to complete one oscillation. The pendulum with a length of 3.98 m and a length of 99.4 cm will have a time period of 4 and 1.99 seconds, respectively.

What is the definition of a simple pendulum?

A simple pendulum is a device with a point mass hanging from fixed support and connected to a light inextensible thread.

The vertical line going through the fixed support represents the mean position of a basic pendulum.

h = vertical distance from the point of suspension

L = length of the simple pendulum

The time period of the simple penduum is given by

$\rm T = 2\pi\sqrt{\frac{l}{g} }$

For l = 3.98 m

$\rm T = 2\times 3.14 \sqrt{\frac{3.98}{9.81} }$

T = 4 second

For  l = 99.4 cm = 0.994 m

$\rm T = 2\times 3.14 \sqrt{\frac{0.994}{9.81} }$

T = 1.99 second

The time period of the pendulum having 3.98 m and 99.4 cm in length will be 4  and 1.99 seconds respectively.

To learn more about the simple pendulum refers to the link;

brainly.com/question/14759840