PH-1866
Centre of gravity and stability
Physics · Secondary 4 · Medium · Centre of gravity and stability
A wooden block rests on a horizontal table. It is slowly tilted about one bottom edge so that the block begins to tip. At the exact point when the block JUST starts to topple, what happens to the line of action of its weight?
- It lies midway between the pivot edge and the centre of the base
- It passes exactly through the pivot edge
- It is still at the centre of the base and far from the pivot
- It passes outside the base, well beyond the pivot edge
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