Maximum speed of the child as she swings is 2.23 m/s.
<h3>Step by Step Calculation:</h3>
T=3.3 s is the oscillation's time period.
The swing's greatest angle is 25° (max).
The swing's bottom will have the following kinetic energy:
k=12mv2...........(1)
The mass in this situation is m, and the speed is v.
The potential energy change is expressed as,
∆U=mgL1-cosθmax...............(2)
Here, L is a string's length and g is the acceleration caused by gravity. L is given as,
L=gT24π2
Combine equation (1) with (2)
12mv2=mgL1-cos, maxv=2g, maxv=gT24, maxv=g2T22, maxv=9.8 m/s
22.33 m/s, 22.31 s22.31 cos25°
Therefore, the child's top speed is 2.23 m/s.
<h3>What is Oscillation ?</h3>
- The process of any quantity or measure fluctuating repeatedly about its equilibrium value in time is known as oscillation.
- A periodic change in a substance's value between two values or around its central value is another way to define oscillation.
To learn more about Oscillation refer to:
brainly.com/question/28312746
#SPJ1
and it says that the energy of an object (E) is equal to the mass (m) of the object multiplied with the squared speed of light (
). This theory says that mass can be turned into energy and energy can be turned into mass. This is one of Einstein's theory of relativity.