1. Look up the formula that predicts the gravitational force between two objects
ID: 1661824 • Letter: 1
Question
1. Look up the formula that predicts the gravitational force between two objects. Explain in everyday language what the formula says and what each term stands for. 2. Define "weight". Explain how "weight" relates to "force". Explain the difference (if there is one) between "weight" and "mass". Is there a standard S.I. unit for "weight"? 3. Is the gravitational force ever repulsive? Explain. 4. The lab manual gives us the formula y = gt 2/2.to relate the distance the ball falls to the time it takes to fall. Could we use this formula to calculate the time it would take an initially stationary spacecraft to fall to earth from 100,000km away? Why or why not? 5. Watch the following two videos: https://youtu.be/MRqtXL2WX2M https://youtu.be/WVx3MYd-Q9vw In your own words, what is standard deviation and what does it tell you about your data? yurdab.? 6. Calculate the standard deviation of the following set of data (Hint: The second video shows you how to do this): 13.2 m/s2, 11.9 m/s2, 10.1 m/s, 12.8 m/s2, and 13.6 m/s2Explanation / Answer
1.
gravitational force between two objects of mass m1 and m2 respectively separated by a distance of "r" is given as
F = G m1 m2 /r2
here G = gravitational constant whose value is 6.67 x 10-11
m1 , m2 = masses of two objects
r = distance between the object
The force depends on the product of the masses directly. and it depends inversly on the square of the distance between them.
2.
Weight : weight if the gravitational force experienced by an object due to earth.
The earth has gravitational field and it pulls everthing towards it with some force. this force also depends directly on the product of mass of object and mass of earth.
Weight changes place to place depending on the value of acceleration of gravity while mass remains constant everywhere.
SI Unit for weight is "N"
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