A 3 kg object is dropped from a height of 5 m. What is the potential energy at t
Practice Questions
Q1
A 3 kg object is dropped from a height of 5 m. What is the potential energy at the height?
15 J
30 J
45 J
60 J
Questions & Step-by-Step Solutions
A 3 kg object is dropped from a height of 5 m. What is the potential energy at the height?
Step 1: Identify the mass of the object. In this case, the mass is 3 kg.
Step 2: Identify the height from which the object is dropped. Here, the height is 5 m.
Step 3: Use the acceleration due to gravity, which is approximately 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 = 3 kg × 9.8 m/s² × 5 m.
Step 6: Calculate the potential energy: 3 × 9.8 × 5 = 147 J.
Potential Energy – Potential energy is the energy stored in an object due to its position in a gravitational field, calculated using the formula PE = mass × gravity × height.
