Question

A pendulum is moving 2.0 m/s at the bottom of its swing. How high vertically will it go before it begins to swing back? Group of answer choices 0.4 m 0.1 m 0.2 m 0.8 m 1.0 m

Answer 1

Answer:

h = 0.2 m

Explanation:

Given that,

A pendulum is moving 2.0 m/s at the bottom of its swing.

We need to find the height high it swing back. Let the height is h.

Using the conservation of energy such that,

$\dfrac{1}{2}mv^2=mgh\\\\h=\dfrac{v^2}{2g}$

Put all the values,

$h=\dfrac{(2)^2}{2\times 10}\\\\h=0.2\ m$

So, it will reach to a height of 0.2 m.