Analogy Reasoning: Newton to Weight, Pascal to Pressure
This question uses an analogy to test knowledge of physical units.
- Newton (N) is the SI unit of force. Weight is a force exerted on an object due to gravity. Therefore, Newton is correctly associated with weight.
- We need to find the unit associated with pressure in the same way Newton is associated with weight.
- Pressure is defined as force per unit area. Its SI unit is the Pascal (Pa).
- Therefore, the correct analogy is: As Newton is to weight, Pascal is to pressure.
Unit Analysis
- Pascal (Pa): The SI unit of pressure.
- Kilogram (kg): The SI unit of mass. Not related to pressure.
- Kelvin (K): The SI unit of thermodynamic temperature. Not related to pressure.
- Kilogram per cubic metre (kg/m³): The SI unit of density. Not related to pressure.
Based on the definitions, Pascal is the correct unit for pressure, completing the analogy.