Using Moments - Equilibrium (AQA A-Level Mathematics): Quizzes

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Using Moments - Equilibrium
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What angle does the ladder make with the horizontal in the first equilibrium problem?

70∘70^\circ

What is the magnitude of the normal reaction at wall point AA in the ladder problem?

6060 N

What is the mass of the ladder in the first problem?

Approximately 33.6433.64 kg

What is the length of the ladder in the equilibrium problem?

88 m

What is the weight of the uniform rod in the second problem?

2020 N

What is the tension in the string holding the rod horizontally?

Approximately 31.6231.62 N

How far above point AA is point CC in the rod problem?

11 m

In the rod problem, what is tan⁡θ\tan \theta equal to?

13\frac{1}{3}

In equilibrium, how do clockwise and anticlockwise moments relate about any point?

They are equal

Why choose a pivot where unknown forces act when taking moments?

Forces through pivot have no moment

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