Question

You find your mass to be 42 kg on a weighing machine. Is your mass more or less than 42 kg? Define weight. Is it scalar or vector quantity? [3 MARKS]

Answer 1

Each point: 1 Mark

1. When we weigh our body, an upward force acts on it. This upward force is the buoyant force. As a result, the body gets pushed slightly upwards, causing the weighing machine to show a reading less than the actual value.
2. The weight of a body is the force with which it is attracted towards the centre of the earth.
3. It is a vector quantity.