A 2 kg object is lifted to a height of 5 m. What is the potential energy gained

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Question: A 2 kg object is lifted to a height of 5 m. What is the potential energy gained by the object? (2022)

Options:

Correct Answer: 20 J

Exam Year: 2022

Solution:

Potential Energy = mass × g × height = 2 kg × 10 m/s² × 5 m = 100 J

A 2 kg object is lifted to a height of 5 m. What is the potential energy gained by the object? (2022)

A 2 kg object is lifted to a height of 5 m. What is the potential energy gained by the object? (2022)

Step 1: Identify the mass of the object. In this case, the mass is 2 kg.
Step 2: Identify the height to which the object is lifted. Here, the height is 5 m.
Step 3: Use the acceleration due to gravity (g). For this problem, we will use 10 m/s² as an approximation.
Step 4: Use the formula for potential energy: Potential Energy = mass × g × height.
Step 5: Substitute the values into the formula: Potential Energy = 2 kg × 10 m/s² × 5 m.
Step 6: Calculate the result: 2 × 10 = 20, then 20 × 5 = 100.
Step 7: Conclude that the potential energy gained by the object is 100 Joules.

Potential Energy – The energy an object possesses due to its position in a gravitational field, calculated using the formula PE = mass × g × height.
Gravitational Acceleration – The acceleration due to gravity, commonly approximated as 10 m/s² for simplicity in calculations.