Answer:
The elevator is accelerating upwards.
Explanation:
The scale should read the weight of the person, which is approximately 450N. Since the scale reads a higher value, the elevator must accelerate upwards to increase the normal force on the scale.
Answer:
The elevator is accelerating upwards at [tex]0.87m/s^{2}[/tex].
Explanation:
Weight is a force and is measured in newtons (N). Measuring weight in kg is a mistake as kg is a unit of mass (not weight). On the surface of the planet, due to gravity, 1kg of mass produces a force of 9.8 newtons. Therefore, 45kg should produce [tex]45kg * 9.8 m/s^{2}=441 N[/tex]. There is an extra [tex]480N - 441N=39N[/tex]. Given that [tex]1N=1kg * 1m/s^{2}[/tex], we have [tex]\frac{1N}{1kg}=1m/s^{2}[/tex].
So, we need to calculate the acceleration related to these extra 39N: [tex]\frac{39N}{45kg}=0.87m/s^{2}[/tex]
