Can an elevator moves at constant speed?

The sensation of apparent weight comes from the support that you feel from the floor, from a chair, etc. Different sensations of apparent weight can occur on an elevator since it is capable of zero or constant speed (zero acceleration) and can accelerate either upward or downward.

Do elevators have acceleration?

Your free-body diagram has two forces, the force of gravity and the upward normal force from the elevator. N = mg if the elevator is at rest or moving at constant velocity. N = mg + ma if the elevator has an upward acceleration. N = mg – ma if the elevator has a downward acceleration.

How do you determine the speed of an elevator?

Deciding speed Speed of elevator is generally determined by the number of floor in the building. A general guide is that it should not take more than 30 seconds to travel in between the top and the lowest floors.

What is the fastest elevator speed?

67 feet per second
The fastest installed elevator reaches speeds of 67 feet per second (20.5 meters per second), or 46 miles per hour (73.8 kilometers per hour) in the Shanghai Tower.

What two forces act on you when you are in a moving elevator when are these forces equal in magnitude when are they not?

What two forces act on you while you are in a moving elevator? When are these forces of equal magnitude and when are they not? The two forces are the normal force and mg, which are equal when the elevator doesn’t accelerate, and unequal when the elevator accelerates.

How does the movement of an elevator affect weight?

If you stand on a scale in an elevator accelerating upward, you feel heavier because the elevator’s floor presses harder on your feet, and the scale will show a higher reading than when the elevator is at rest. On the other hand, when the elevator accelerates downward, you feel lighter.

When an elevator accelerates downward your weight reading is?

If the elevator accelerates downward, a is negative, and the apparent weight is less than the true weight. If the elevator falls freely, , and the apparent weight is zero. The apparent weight is zero because when both the person and the scale fall freely, they cannot push against one another.

What is the physics of an elevator?

Elevator Physics. the elevator has a downward acceleration (accelerating down, or decelerating while on the way up) In this situation there are no new forces acting when there is an acceleration – one or more of the forces simply change size to produce the acceleration. Your free-body diagram has two forces,…

How do you calculate normal force on a moving elevator?

Consider the normal force acting on you from the elevator: N = mg if the elevator is at rest or moving at constant velocity. N = mg + ma if the elevator has an upward acceleration. N = mg – ma if the elevator has a downward acceleration.

What happens to your weight when the elevator starts and stops?

When the elevator is moving, we will weigh our normal weight. Since we are already moving at the same speed as the elevator (up or down), nothing is affecting us to change our weight. However, when the elevator starts to go or stops, our body resists it. Let’s say we are going down.

What are the forces acting on the elevator cable?

The combined system of you + elevator has two forces, a combined force of gravity and the tension in the cable. Consider the normal force acting on you from the elevator: The normal force is equal to your apparent weight.