If a 5 kg object is lifted to a height of 10 m, what is the potential energy gai
Practice Questions
Q1
If a 5 kg object is lifted to a height of 10 m, what is the potential energy gained by the object? (g = 9.8 m/s²)
490 J
980 J
245 J
2450 J
Questions & Step-by-Step Solutions
If a 5 kg object is lifted to a height of 10 m, what is the potential energy gained by the object? (g = 9.8 m/s²)
Correct Answer: 490 J
Step 1: Identify the mass of the object. In this case, the mass is 5 kg.
Step 2: Identify the height to which the object is lifted. Here, the height is 10 m.
Step 3: Identify the acceleration due to gravity (g). It is given as 9.8 m/s².
Step 4: Use the formula for potential energy: Potential Energy = mass × g × height.
Step 5: Substitute the values into the formula: Potential Energy = 5 kg × 9.8 m/s² × 10 m.
Step 6: Calculate the result: 5 × 9.8 × 10 = 490 J.
Step 7: Conclude that the potential energy gained by the object is 490 Joules.
Potential Energy – The energy possessed by an object due to its position in a gravitational field, calculated using the formula PE = mass × g × height.