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RideAnS [48]
3 years ago
6

Three forces act on an object. Two of the forces are at an angle of 100◦to each other and have magnitude 25N and 12N. The third

is perpendicular to the plane of these two forces and has magnitude 4N. Calculate the magnitude of the force that would exactly counterbalance these three forces.
Physics
1 answer:
seraphim [82]3 years ago
6 0

Answer:

F₄ = 29.819 N

Explanation:

Given

F₁ = (- 25*Cos 50° i + 25*Sin 50° j + 0 k) N

F₂ = (12*Cos 50° i + 12*Sin 50° j + 0 k) N

F₃ = (0 i + 0 j + 4 k) N

Then we have

F₁ + F₂ + F₃ + F₄ = 0

⇒   F₄ = - (F₁ + F₂ + F₃)

⇒   F₄ = - ((- 25*Cos 50° i + 25*Sin 50° j) N + (12*Cos 50° i + 12*Sin 50° j) N + (4 k) N) = (13*Cos 50° i - 37*Sin 50° j - 4 k) N

The magnitude of the force will be

F₄ = √((13*Cos 50°)² + (- 37*Sin 50°)² + (- 4)²) N = 29.819 N

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Find the electric field a distance z above a circular ring carrying a constant line charge. For extra credit you may derive the
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A. A PH202 student lives next to a construction site and sees a crane with a wrecking ball demolish the building next door. The
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Answer:

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Since,

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Surface tension is the propensity of liquid surfaces at rest to shrink to the smallest possible surface area.

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The only substance with a higher surface tension than water is liquid mercury (450 dyne/cm).

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brainly.com/question/19390213

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