uniform motion earth's orbit question.

[rcmango]

the question: What is the acceleration due to gravity of the sun at the distance of earth's orbit?

before i attempt this problem, can someone help me identify the given information that i may need that is not given in the question, maybe gravity (9.8) or where to use it.

i believe i may need this formula (2pie*r)/T

also may need to find rpm's and convert to rev's, in order to get velocity, and then use the velocity in a formula to get the acceleration. I think thats the approach i may need, its just the information isn't available in the question.

this was from memory. maybe some typos.

thankyou for any help.

[OlderDan]

the question: What is the acceleration due to gravity of the sun at the distance of earth's orbit?

before i attempt this problem, can someone help me identify the given information that i may need that is not given in the question, maybe gravity (9.8) or where to use it.

i believe i may need this formula (2pie*r)/T

also may need to find rpm's and convert to rev's, in order to get velocity, and then use the velocity in a formula to get the acceleration. I think thats the approach i may need, its just the information isn't available in the question.

this was from memory. maybe some typos.

thankyou for any help.
You need the law of universal gravitation and Newton's second law, and the values of a few contants (masses, distance, G) and that is all.