Four blocks are placed on a flat tabletop. Each block has a different base area and its centre of mass is at a different height.
Which block is the least stable?
| Block | Base area | Height of centre of mass |
|---|---|---|
| A | large | low |
| B | large | high |
| C | small | low |
| D | small | high |
Block A
Block B
Block C
Block D
245 exam-style questions on CIE IGCSE Physics 1.5 Forces, covering 1.5.1a Forces, resultant force and motion, 1.5.1b Load–extension graphs and the spring constant, 1.5.1c Friction and drag, 1.5.1d Force, mass and acceleration, 1.5.1e Motion in a circular path, 1.5.2a Moment of a force, 1.5.2b Principle of moments and equilibrium, and 1.5.3 Centre of gravity and stability. Each one has a worked solution and a mark scheme showing where the marks go.