Find the best solutions to your problems with the help of IDNLearn.com's expert users. Our platform is designed to provide reliable and thorough answers to all your questions, no matter the topic.

A sled is at rest at the top of a slope 2 m high. The sled has a mass of 45 kg. What is the sled's potential energy? (Formula: [tex]$PE = mgh$[/tex])

A. 90 J
B. 56.8 J
C. 441 J
D. 882 J


Sagot :

To determine the sled's potential energy, we can use the formula for gravitational potential energy:

[tex]\[ PE = m \cdot g \cdot h \][/tex]

Where:
- [tex]\( PE \)[/tex] is the potential energy,
- [tex]\( m \)[/tex] is the mass of the object (in kilograms),
- [tex]\( g \)[/tex] is the acceleration due to gravity (in meters per second squared, [tex]\( m/s^2 \)[/tex]),
- [tex]\( h \)[/tex] is the height (in meters).

Given:
- The mass [tex]\( m = 45 \)[/tex] kg,
- The acceleration due to gravity [tex]\( g = 9.8 \, m/s^2 \)[/tex],
- The height [tex]\( h = 2 \)[/tex] meters.

Now, substituting the given values into the formula:

[tex]\[ PE = 45 \, \text{kg} \times 9.8 \, m/s^2 \times 2 \, \text{m} \][/tex]

When we multiply these numbers together:

[tex]\[ PE = 45 \times 9.8 \times 2 \][/tex]
[tex]\[ PE = 882 \, \text{J} \][/tex]

Therefore, the sled's potential energy is 882 joules.

So, the correct answer is:

[tex]\[ \boxed{882 \, \text{J}} \][/tex]
We appreciate your presence here. Keep sharing knowledge and helping others find the answers they need. This community is the perfect place to learn together. Your search for solutions ends at IDNLearn.com. Thank you for visiting, and we look forward to helping you again.