Question

Question 6

How much PE does a 0.51kg crate have if it is 3m above the ground?
1.53 J
O 15 )
5.9)
3.51)

Answer 1

The potential energy of a 0.51 kg crate 3m above the ground is calculated using the formula PE = mgh. By substituting in the values (mass = 0.51 kg, gravity = 9.8 m/s², and height = 3 m), the potential energy is found to be approximately 15 J.

Step-by-step explanation:

To calculate the gravitational potential energy (PE) of a 0.51 kg crate that is 3 m above the ground, we use the formula PE = mgh, where:

• m is the mass of the object in kilograms,
• g is the acceleration due to gravity (9.8 m/s² on Earth), and
• h is the height above the ground in meters.

For the crate:

1. m = 0.51 kg,
2. g = 9.8 m/s², and
3. h = 3 m.

Plugging these values into the formula gives us:

PE = 0.51 kg × 9.8 m/s² × 3 m = 14.994 J,

which we can round to 15 J for simplicity.

Therefore, the 0.51 kg crate has a potential energy of approximately 15 J when it is 3 m above the ground.