Find gravity on an unknown planet

In summary, using the given animation, we can determine the acceleration due to gravity ('g') on the planet Org to be 7.5m/s2. This is calculated by using the equation a=vf-vi, where vi is the initial velocity (0m/s) and vf is the final velocity (7.5m/s) after 1 second. However, this value differs from the calculated value of g using the equation a=gsinθ, where θ is the angle of inclination (36.15 degrees) and a is the acceleration (7.5m/s2). This discrepancy suggests a possible error in one of the equations or in the data provided.
  • #1
dragon18
12
0
Starting from rest, an object is sliding down a frictionless inclined plane on the planet Org. Using the animation, determine the acceleration due to gravity ('g') on the planet. Use the protractor shown on the screen to measure the angle of inclination.
https://www.physicsforums.com/attachments/55979
point 1: 0s 0,30
point 2: 1s 2.6, 27.2
point 3: 2s 10, 21.7
point 4: 3s 22.7, 12.6
point 5: 4s 40, 0
Theta: 36.15

Relevant Equations
a=vf-vf
a=gsinθ



Attempt
vi=0m/s
vf=7.5m/s
a=7.5m/s2

g=sin36.15/7.5
g=0.0787m/s2
 
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  • #2
Please show your working and the reasoning behind it.

Note:
Invalid Attachment specified.
You have a mistake in one of your equations.

if a=7.5m/s2 and vi=0 as you have stated,
then
1. what is the speed after 1 second?
2. does this agree with the data?
 

Related to Find gravity on an unknown planet

1. How is gravity measured on an unknown planet?

The gravity on an unknown planet can be measured by using a device called a gravimeter. This device measures the gravitational pull on an object and can provide an accurate measurement of the planet's gravity.

2. What factors can affect the gravity on an unknown planet?

The gravity on a planet can be affected by its mass, size, and density. The larger and denser a planet is, the stronger its gravitational pull will be.

3. How does the gravity on an unknown planet compare to Earth's gravity?

The gravity on an unknown planet can vary greatly from Earth's gravity. Some planets may have stronger gravity, while others may have weaker gravity. It all depends on the planet's mass and size.

4. Can gravity be manipulated on an unknown planet?

In theory, it is possible to manipulate gravity on a planet using advanced technology. However, this is currently not possible with our current level of technology.

5. How does the gravity on an unknown planet affect the movement of objects?

The gravity on a planet affects the movement of objects by pulling them towards the planet's center. The strength of the gravity will determine the speed at which objects fall towards the surface of the planet.

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