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3 years ago

7

If F1 = 390 N and F2 = 550 N , determine the angle θ(0∘≤θ≤180∘) between them, so that the resultant force has a magnitude of FR

= 780 N .Express your answer to two significant figures and include the appropriate units.

1 answer:

Nadya [2.5K]3 years ago

5 0

Answer:

Explanation:

R² = F₁² + F₂² + 2F₁F₂ Cosθ , R is resultant force , θ is angle between them

780² = 390² + 550² + 2 x 390 x 550 Cosθ

608400 = 152100 + 302500 + 429000 Cosθ

Cosθ = .3585

θ = 69 degree.

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alexandr402 [8]

Answer:

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3 years ago

PLEASE HELP!! Newtons first law states that if an objects velocity is changing a __________ must be acting on it. Question 1 opt

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Newtons first law states that if an objects velocity is changing a <u>force</u> must be acting on it.

Explanation:

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We can apply this law to a daily life example:

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3 years ago

Two workers are sliding 290 kg crate across the floor. One worker pushes forward on the crate with a force of 430 N while the ot

frozen [14]

Answer:

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3 years ago

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Vinvika [58]

Answer:

The phase angle is 0.0180 rad.

(c) is correct option.

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Hence, The phase angle is 0.0180 rad.

3 0

4 years ago