A-Level H2 物理筆記
Chapter 5: Turning Effect of Forces
Centre of gravity
(a) Describe the moment of a force in terms of its turning effect and relate this to everyday examples.
(b) Recall and apply the relationship moment of a force (or torque) = force × perpendicular distance from the pivot to new situations or to solve related problems.
(c) State the principle of moments for a body in equilibrium.
(d) Apply the principle of moments to new situations or to solve related problems.
(e) Show understanding that the weight of a body may be taken as acting at a single point known as its center of gravity.
(f) Describe qualitatively the effect of the position of the center of gravity on the stability of objects.