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Answer :
Answer:
Force = mass times acceleration
Acceleration is change in velocity over time.
The elevator is moving at constant velocity. That means there is no net force on the elevator. Gravity is still acting on the elevator but the tension of cables, friction and other mechanism are cancelling out the acceleration due to gravity. The same as an elevator being held at a floor.
The normal force is the force exerted by surfaces the to stop you from passing through. It is perpendicular to the surface the object is on, in this case the 38.5kg person. It being an elevator I am assuming the floor is perpendicular to the force of gravity. Normal force is equal to the force being exerted on it, in this scenario the persons mass x acceleration due to gravity.
So your answer is 38.5kg x 9.81m/s^2 = 377.685N
Explanation:
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The normal force is being exerted on the man an elevator that is moving at a constant speed 377.3 N.
What is force?
The definition of force in physics is: The push or pull on a massed object changes its velocity.
An external force is an agent that has the power to alter the resting or moving condition of a body. It has a direction and a magnitude. The application of force is the location at which force is applied, and the direction in which the force is applied is known as the direction of the force.
A spring balance can be used to calculate the Force. Newton is the SI unit of force.
The normal force is being exerted on the man = weight of the man
= 38.5 kg × 9.8 m/s²
= 377.3 Newton.
So, the normal force is being exerted on the man is 377.3 Newton.
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