A passenger of mass $60\,\text{kg}$ steps into a lift that is not moving. The gravitational field strength $g$ is $10\,\text{N kg}^{-1}$. What force is exerted by the lift floor on the passenger when the lift accelerates upwards at $2.0\,\text{m s}^{-2}$?
- A$120\,\text{N}$
- B$480\,\text{N}$
- C$600\,\text{N}$
- D$720\,\text{N}$