An object is lifted to a height of 10 m. If the mass of the object is 5 kg, what
Practice Questions
Q1
An object is lifted to a height of 10 m. If the mass of the object is 5 kg, what is the gravitational potential energy gained?
50 J
100 J
150 J
200 J
Questions & Step-by-Step Solutions
An object is lifted to a height of 10 m. If the mass of the object is 5 kg, what is the gravitational potential energy gained?
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: Know the value of gravitational acceleration (g). It is approximately 9.8 m/s².
Step 4: Use the formula for gravitational 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 gravitational potential energy gained is 490 Joules.
Gravitational Potential Energy – The energy an object possesses due to its position in a gravitational field, calculated using the formula PE = mass × g × height.
Units of Measurement – Understanding the units involved in the calculation, such as kilograms for mass, meters for height, and joules for energy.
Acceleration due to Gravity – Recognizing that the standard value for g (acceleration due to gravity) is approximately 9.8 m/s² near the Earth's surface.