00:01
Hello, here we have to solve the following problem.
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An object is experiencing three forces.
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F1 is in a positive x direction, and this up 1 is 6 .9 neutrons.
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F2 is 4 .7 neutrons, and we have to determine the third force, which is needed to move the object at a constant velocity.
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Let's make this sketch.
00:45
Of 1, here, this sum of these two forces must be equal to the negative f3.
00:56
Therefore, we can show this force of 3.
01:03
And vector sum of all three forces equals to 0.
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Therefore, we can find the magnitude of f3.
01:13
Magnitude of f3 is square root of f1 squared plus f2 squared...