Select the correct answer.

An object with a mass of 5.24 kilograms is raised to a height of 1.63 meters. What is the potential energy of the object at that height? Note that the acceleration due to gravity is 9.8 meters/second².

A. 65 joules
B. 84 joules
C. 91 joules
D. [tex]\(1.0 \times 10^2\)[/tex] joules
E. [tex]\(1.5 \times 10^2\)[/tex] joules



Answer :

To determine the potential energy of an object, we use the formula for gravitational potential energy:

[tex]\[ \textrm{Potential Energy} = m \times g \times h \][/tex]

where:
- [tex]\( m \)[/tex] is the mass of the object,
- [tex]\( g \)[/tex] is the acceleration due to gravity,
- [tex]\( h \)[/tex] is the height at which the object is raised.

In this scenario:
- The mass [tex]\( m \)[/tex] is 5.24 kilograms,
- The acceleration due to gravity [tex]\( g \)[/tex] is 9.8 meters/second²,
- The height [tex]\( h \)[/tex] is 1.63 meters.

Now, let's calculate step-by-step:

1. Substitute the known values into the formula:

[tex]\[ \textrm{Potential Energy} = 5.24 \, \textrm{kg} \times 9.8 \, \textrm{m/s}^2 \times 1.63 \, \textrm{m} \][/tex]

2. Multiply the mass by the acceleration due to gravity:

[tex]\[ 5.24 \times 9.8 = 51.352 \][/tex]

3. Multiply this result by the height:

[tex]\[ 51.352 \times 1.63 = 83.70376 \][/tex]

The potential energy of the object is approximately [tex]\( 83.70376 \)[/tex] joules.

Given the options:
A. 65 joules
B. 84 joules
C. 91 joules
D. 1.0 x 10² joules
E. 1.5 x 10² joules

The closest correct answer is:

B. 84 joules.