Addition of Vectors By Means of Components - Physics
Credibility score: 71/100 — Mostly Credible. Mixed credibility - some claims are solid, others need verification.
BSmeter analyzed "Addition of Vectors By Means of Components - Physics" and rated it 71/100 for credibility (a BS score of 29/100 — mostly credible), on 2026-09-01. Its weakest claim — "Says 'find the left of the hypotenuse' — Pythagorean theorem gets mangled into nonsense." — scored 20/100 and was flagged as confidence mismatch. 28 claims were checked against the video transcript. Scores are produced by BSmeter's AI analysis of the transcript, not independent human verification.
Claims analyzed
Vector = magnitude + direction, adds straight when parallel — No Frame (75/100)
Clean definition, matches every textbook. Straight physics, no trick.
North-south numbers: 120 – 80 = 40 N, but direction not stated — Missing Context (45/100)
Calculation correct, yet never names which way the 40 N points. Leaves the student hanging.
Opposite directions: net = difference, direction follows larger vector — No Frame (75/100)
Arithmetic checks out, direction logic stated plainly. No hidden assumptions.
Perpendicular vectors need Pythagorean hypotenuse; says 'third newton' — Confidence Mismatch (45/100)
Method is right, but 'third newton' is clearly a slip — numbers don't match earlier examples.
Says 'find the left of the hypotenuse' — Pythagorean theorem gets mangled into nonsense. — Confidence Mismatch (20/100)
Mortal, that sentence makes zero sense. You meant 'length' — 'left' is a direction, not a measurement. 💀
Pythagorean theorem applied correctly — magnitude of resultant = √(F1² + F2²). — No Frame (75/100)
Straight math, no tricks. Works for perpendicular vectors.
Magnitude calculated as 50 N — correct arithmetic result. — No Frame (75/100)
√(900 + 1600) = 50. The numbers work.
tan θ = opposite/adjacent applied correctly for direction angle. — No Frame (75/100)
Standard arctangent setup. Direction angle = arctan(40/30).
arctan(40/30) ≈ 53.1° — correct calculation. — No Frame (75/100)
arctan(4/3) rounds to 53.13°. Math is solid.
53.1° is the exact direction of the resultant vector — No Frame (75/100)
Straight calculation — tan⁻¹(40/30) lands on 53.1° every time.
5-12-13 triangle means the hypotenuse 'has to be' 130 — No Frame (75/100)
Recognizes the scaled 5-12-13 right triangle — 50-120-130 is exact.
√(50² + 120²) will 'turn out to be' 130 newtons — No Frame (75/100)
Pythagorean theorem applied to the legs — 130 N is the direct result.
tan⁻¹(120/50) gives a reference angle of 67.4° — No Frame (75/100)
Reference angle calculation is precise — 67.4° is correct to one decimal.
Adds 180 to reference angle, assumes quadrant 3 — No Frame (75/100)
Walks through the quadrant rule in real time — textbook move, no sleight of hand.
States 247.4° and 130 magnitude as final answer — No Frame (75/100)
Gives both magnitude and direction in one breath — exactly what the problem asked for.
Quadrant 4 rule: 360° - 53.1° = 306.9° — No Frame (75/100)
Correctly identifies quadrant 4 and subtracts from 360° — textbook quadrant logic.
Labels directions 'positive' and 'south' to set quadrant — No Frame (75/100)
Straight coordinate system setup — no trick, just defining axes.
Calculates 306.9° by subtracting reference angle from 360 — No Frame (75/100)
Correct quadrant four angle rule — 360 minus the reference angle.
Gives angle rules for quadrants 2 and 3 — No Frame (75/100)
Standard quadrant rules, delivered clearly and without embellishment.
Switches to non-aligned vectors, sets up 100 N east + 150 N at 30° — No Frame (75/100)
Clean transition into the general case — no loaded language or missing pieces.
Switches 'inch' to 'newtons' mid-sentence — inconsistency in units. — No Frame (75/100)
Calls the first vector '100 inch' then switches to '100 newtons' without correction.
States the component formulas correctly — no tricks here. — No Frame (75/100)
Gives the standard trig definitions for components and resultant magnitude and direction.
cos(0) = 1 so Fx = 100 — textbook definition, no trick — No Frame (75/100)
Straight math, no embellishment. Cosine zero is one — everyone knows that.
150 cos 30° = 129.9 — calculator output presented as fact — No Frame (75/100)
Rounding to one decimal is fine — standard physics rounding.
150 sin 30° = 75 — clean, exact, no rounding — No Frame (75/100)
Sin 30° is exactly 0.5 — zero wiggle room, zero rounding issues.
100 + 129.9 = 229.9 — adding components directly — No Frame (75/100)
Basic arithmetic. Nothing fancy, nothing hidden.
Magnitude = √(Fx² + Fy²) — Pythagorean theorem applied — No Frame (75/100)
Textbook definition of vector magnitude. No deception here.
Arc tan of y over x gives 18.1° — textbook move, no tricks — No Frame (75/100)
Straight physics method, no loaded words or hidden assumptions.
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