Please help me with this Physics Lab, questions 1-12.My answers for #1 & #2 are correct. However, please check that my answers for #3, #4, & #5 are correct.Please check that my answers are correct for #6, #7, #8, & #9.And PLEASE help me with #10. I don't know how to find the answers for #10 at all.Lastly, please check that my answers are correct for #11 & #12.
Investigating distance apart: Where do you think we should measure distances from, the SURFACE or the CENTER of mass of the object? (Circle) Set the masses of each at 10 Kg. Move the ruler so one center is on Zero (0) meter distance and the other center on 2 meter mark. (you should get a reading very close to 1.67 X 10- Newtons ) Note: Drag the ruler over the top of both spheres. Move the blue ball to the left side. 1. What is the Gravitational Force on each of the balls? 1.67 x 10- N Now double the distance from the centers, move to the 4 meter mark. (4.17 X 10 -10 Newtons) 2. What is the Gravitational Force on each of the balls? 4.17 x 10. N 3. What is the change in the forces? Divide your first number by the second number. What is the approximate closest whole number? Answer: 4 (4.00479616 X 10 OR 0.40047961 X 10') Now triple the distance from the centers, move to the 6 meter mark. (1.85 X 10 -> Newtons) 4. What is the change in the forces? the forces decrease as the distance triples. 5. Divide your first number by this third number reading. What is the approximate closest whole number? Answer: 9 (0.9027 X 10' OR 9.027 X 10 ) SUMMARY 6. What can you conclude about doubling the distance and the number you get? Courtesy: This lab has been adopted from Prof Jerry Soostand it has been modified The number is X bigger or smaller. 7. What can you conclude about tripling the distance and the number you get? The number is X bigger or smaller . What about the magnitude about this mathematical relationship? Direct Inverse (nverse of the square (circle your answer) 9. What about the magnitude? The magnitude is the INVERSE of the SQUARE of the distance. 10. PREDICT - What should you divide the original gravitational force by if the centers are 4 X apart? (You are going from the 2 meter separation to 8 meters apart.) The gravity should DROP BY a factor of PREDICT - Do the division - using the original value for gravity, (1.65 X 10-9 at 2 meters ), what is the value for the gravitational force? 16.5 X 10-10 N / Answer: CHECK YOUR PREDICTION: What value did you get for the gravity force when moved 4X apart? Write an equation relationship with these two factors: Gravitational Force - Constant (gravitational) Go back to the objective of this simulation on the first page and write in the two answers. 11. If the mass of the moon is 1.2% that of the earth, why is the gravity on the moon only 1/6 that on earth? The moon is far less massive than Earth. The surface gravity is proportional to Its mass._ 12. If you weigh 180 pounds on the Earth, what would you weight on the moon? _30 pounds on the moon MATH CALCULATION: A 200 pound person would weigh about 64 pounds on the moon. Force of gravity on MOON = (200 pds humans weight on earth) (.02 moon mass compared Lo earth) (see above link for values) 1/42 size of moon compared to earth)
