Given data:
height of cough from ground floor (h) = 8.2 m,
mass of the cough (m) = 120 kg,
find gravitational Potential energy (U) =?
acceleration due to gravity (g) = 9.81 m/s²
Gravitational potential energy is defined as "the energy possessed by an object because of its position in the gravitational field". This principle can be applied to objects that are over the earth's surface and gravitational constant assumed to be 9.81 m/s².
Gravitational potential energy also defined as work done in moving the object from infinite to a particular point by the effect of gravity.
Therefore, mathematically
Grvitational Potential energy
U = m.g.h Joules
where,
m= mass of object in kg
g = gravitational constant in m/s² (g=9.81 m/s²)
h = height of the object from ground in m
U = 120 kg × 9.81 m/s²× 8.2 m
= 9653.04 J
The gravitational potential energy is 9653.04 Joules
The gravitational potential energy gained by the couch is of 9643.2 J.
Given data:
The distance lifted by the Sasha is, h = 8.2 m.
The mass of couch is, m = 120 kg.
The given problem is resolved using the concept of potential energy. The potential energy is the energy of an object with the virtue of position. Then the expression is given as,
PE = mgh
Here, g is the gravitational acceleration.
Solving as,
[tex]PE = 120 \times 9.8 \times 8.2\\PE = 9643.2 \;\rm J[/tex]
Thus, we can conclude that the gravitational potential energy gained by the couch is of 9643.2 J.
Learn more about the gravitational potential energy here:
https://brainly.com/question/23134321
