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: PE = mgh)
90 J
56.8 J
441 J
882 J
Answers
Given:-
- Height of slope ,h = 2 m
- Mass ,m = 45 kg
To Find:-
- Potential Energy ,PE
Solution:-
As we know that the energy possess by body due to its position is called Potential Energy.
Also, The acceleration due to gravity is 9.8m/s²
• PE = mgh
where,
PE is the Potential Energy
m is the mass of body
g is the acceleration due to gravity
h is the height
substitute the value we get
→ PE = 45 × 9.8×2
→ PE = 90×9.8
→ PE = 9×98
→ PE = 882 J
Therefore, the potential energy is 882 Joules.
Answer :-
Given :-
- Height of slope = 2 m
- Mass of sled = 45 kg
To find :-
- Potential energy - PE
Solution :-
- h = 2 m
- m = 45 kg
- g = 9.8 m/s²
Substituting the value in formula :-
P.E. = mgh
P.E. = 2 × 45 × 9.8
P.E. = 882 J
Potential energy = 882 J
Additional information :-
Potential energy is the energy possessed by a body by virtue of its position or deformed shape.
Types of Potential energy -
- Gravitational potential energy :-
The energy possessed by a body by virtue of its position is known as gravitational potential energy.
- Elastic Potential energy :-
The energy possessed by a body by virtue of the deformed shape is known as elastic potential energy.