Potential Energy (PE) Proble me: 6. Arock of mass 2.2 kg is held 8 meters above the ground Calculate the gravitational potential energy. 7.A 15 kg object is placed on a shelf 3.5 motors high. Find its potential energy. 8.A 3 kg book is placed on a table that is 7 meters above the floor What is the potential energy of the book? 9.A 55 kg crate is lifted 5 meters in the air. Calculate the potential energy of the crate. 10. A 0.9 kg bird is perched on a tree 6 meters above the ground. What is the gravitational potential energy of the bird?

Here are the solutions to the potential energy problems:<br /><br />**Formula:**<br /><br />Gravitational Potential Energy (PE) = m * g * h<br /><br />Where:<br /><br />* m = mass (in kg)<br />* g = acceleration due to gravity (approximately 9.8 m/s²)<br />* h = height (in meters)<br /><br />**Calculations:**<br /><br />**6.** m = 2.2 kg, h = 8 m<br /><br />PE = (2.2 kg) * (9.8 m/s²) * (8 m) = **172.48 Joules**<br /><br /><br />**7.** m = 15 kg, h = 3.5 m<br /><br />PE = (15 kg) * (9.8 m/s²) * (3.5 m) = **514.5 Joules**<br /><br /><br />**8.** m = 3 kg, h = 7 m<br /><br />PE = (3 kg) * (9.8 m/s²) * (7 m) = **205.8 Joules**<br /><br /><br />**9.** m = 55 kg, h = 5 m<br /><br />PE = (55 kg) * (9.8 m/s²) * (5 m) = **2695 Joules**<br /><br /><br />**10.** m = 0.9 kg, h = 6 m<br /><br />PE = (0.9 kg) * (9.8 m/s²) * (6 m) = **52.92 Joules**<br />