Explanation:
The gravitational force equation is the following:

Where:
G = Gravitational constant = 
m1 & m2 = the mass of two related objects
r = distance between the two related objects
The problem gives you everything you need to plug into the formula, except for the gravitational constant. Let me know if you need further clarification.
27.5 because of you divide the 55miles with the time you get your velocity which is the speed.
Answer:
a. 
b. 
c. 
d. 
Explanation:
a. The speed is the distance travelled divided by the time:

b. The magnitud of the centripetal acceleration is given by:

c. According to Newton's second law, at the top we have:

d. According to Newton's second law, at the bottom we have:

Answer:
Ep = 3704.4 J
Explanation:
Data:
- Mass (m) = 126 kg
- Gravity (g) = 9.8 m/s²
- Height (h) = 3 m
- Potential Energy (Ep) = ?
Use formula:
Replace:
- Ep = 126 kg * 9.8 m/s² * 3 m
Multiply, but it tells us that the units should not be used in the answer, so we solve it as follows:
What is the GPE?
The GPE is <u>3704.4 Joules.</u>