Equilibrium in 2D (Edexcel A-Level Mathematics): Quizzes

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Equilibrium in 2D
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What is a static body in mechanics?

An object in equilibrium

What is the first step in solving 2D equilibrium problems?

Identify all forces

For equilibrium, what must the sum of horizontal forces equal?

Zero

For equilibrium, what must the sum of vertical forces equal?

Zero

What is the value of sin⁡30∘\sin 30^\circ?

12\frac{1}{2}

What is the value of cos⁡30∘\cos 30^\circ?

32\frac{\sqrt{3}}{2}

What is true about tension in a light inextensible string?

Same throughout the string

What method is used to split angled forces into components?

Trigonometry with sine and cosine

If forces (x,−7,z)(x,-7,z), (4,y,−5)(4,y,-5), (5,4,−7)(5,4,-7) are in equilibrium, what is xx?

−9-9

How do you calculate the magnitude of vector (a,b,c)(a,b,c)?

a2+b2+c2\sqrt{a^2 + b^2 + c^2}

What is the magnitude of the vector (5,4,−7)(5,4,-7)?

3103\sqrt{10}

If Tcos⁡30∘=8T\cos 30^\circ = 8, what is the tension TT?

1633\frac{16\sqrt{3}}{3} N

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Forces

Newton's Second Law

Further Forces & Newton's Laws

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Forces

Newton's Second Law

Further Forces & Newton's Laws

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Forces

Newton's Second Law

Further Forces & Newton's Laws

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Forces

Newton's Second Law

Further Forces & Newton's Laws

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