O-LevelPhysicsForces5054/22 · Oct/Nov 2018 · Q26 Marks
A sports car is designed to be very stable when turning a corner at high speed. Fig. 2.1 shows the position of the centre of mass of the car. [Figure 2.1]
- (a)State what is meant by centre of mass.[1]
- (b)State two features of the design that make the car in Fig. 2.1 stable. 1. 2.[2]
- (c)Fig. 2.2 shows an irregularly shaped piece of card. Describe how to determine the position of the centre of mass of the piece of card. You may draw on Fig. 2.2 or in the blank space. [Figure 2.2][3]
This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.
Mark scheme
Marking points from the official mark scheme (Oct/Nov 2018). The mark or mark type is shown in brackets.
- [1] (place where entire) mass (seems) to be located
- [1] wide base / base area large
- [1] low centre of mass
- [1] suspend lamina next to plumb line / mass on string
- [1] mark vertical line on lamina / line along string / plumb line
- [1] repeat from another point and centre of mass at intersection of lines
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