Centres of Mass (Edexcel A-Level Mathematics): Flashcards

Weight = mass × gravity ($W = m \times g$)

The lever is held at an angle of $30$ degrees.

The force $F$ is horizontal and applied at the lever's end.

Clockwise moments are taken as positive about the pivot.

$F = \frac{49.3 \text{ N} \cdot \sin(30°) \cdot 0.75}{\cos(30°) \cdot 1.5}$

$F = \text{mass} \times \text{acceleration}$ ($F = m \times a$)

They visualise forces to aid in solving motion problems.

Weight, normal reaction, and friction forces.

Sum of horizontal and vertical forces must equal zero.

Friction must prevent slipping while acting against forces.