three objects are positioned along a straight line.from left to right their masses ar 181,70 and 405kg.the 70kg object is 0.310m from the 181kg object and 0.460m from the 405kg object.what is the gravitational force acting on the 181kg object?

Question

anonymous · Answer

$$F=\frac{m_1m_2G}{d^2}$$m1 is always 181.
Find the force contribution from both other masses, add together the forces for the total force (make sure that the forces are in the same direction, subtract if different)

ksaimouli · Answer

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ksaimouli · Answer

i found the f=6.67*10^-11 (70*181)/(0.310)^2

ksaimouli · Answer

same as other and i added them i got 3.191

anonymous · Answer

They're in opposite directions! Don't add.

ksaimouli · Answer

so subtract and how do u know that their r opposite forces

ksaimouli · Answer

@henpen

anonymous · Answer

|dw:1348948148332:dw| Logic

anonymous · Answer

Gravity pulls

ksaimouli · Answer

so is it -1.43

anonymous · Answer

No idea, which did you subtract what what?

ksaimouli · Answer

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