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From the above explanation and given condition when person in an elevator is moving at constant speed in such case the net acceleration will be zero. Thus we can say that person’s weight when he is in a moving elevator will not change because the apparent weight of the person will be equal to its true weight.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.You Feel “Weightless” If the Elevator Cable Breaks
The phenomenon of “weightlessness” occurs when there is no force of support on your body. When your body is effectively in “free fall”, accelerating downward at the acceleration of gravity, then you are not being supported.
Does your weight change when you are in an elevator?
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.
What happens to the body in an elevator?
You Feel “Weightless” If the Elevator Cable Breaks
The phenomenon of “weightlessness” occurs when there is no force of support on your body. When your body is effectively in “free fall”, accelerating downward at the acceleration of gravity, then you are not being supported.
Elevator Physics Problem – Normal Force on a Scale Apparent Weight
Images related to the topicElevator Physics Problem – Normal Force on a Scale Apparent Weight
What happens to your weight when the elevator starts moving and why?
When an elevator starts to accelerate upwards, you and your scale experience the same acceleration. The floor of the elevator pushes you and the scale upwards. This means the scale has to push on the person with an extra force to push you and your weight up too.
When going down in an elevator do you weigh?
The normal force is equal to your apparent weight. So, you actually feel a little heavier than usual when the elevator accelerates upward, and lighter than usual when the acceleration is down.
What happen to the weight of a person inside a moving elevator when the cable is accidentally cut and the elevator falls freely?
If the cord of the lift is broken, it falls freely. In this situation, the weight of the person in the elevator becomes zero.
What would happen to the weight of a body in a lift moving upward with uniform speed?
Solution : The apparent weight will increase . If the lift is going with unifrom speed the apparent weight will remain the same as the real weight . Step by step solution by experts to help you in doubt clearance & scoring excellent marks in exams.
What is the weight of a body in lift?
If the elevator were stationary then the weight of the person will be mass times acceleration due to gravity which is 80kg times 9.81m/s/s. If the elevator moves down at a constant acceleration of ‘a’ m/s/s then the normal reaction force required will be less so the weight is m(g-|a|).
See some more details on the topic What will happen to a person’s weight when he is in a moving elevator? here:
Q & A: Weight Changing Elevators | Department of Physics
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), …
What will happen to a person’s weight when he is in a moving …
Thus, the apparent weight of the man becomes zero. This is because both the man and the lift are moving downwards with same acceleration ‘g’ and so there are no …
Weight of a Person Riding in an Elevator – Wolfram …
On the other hand, when the elevator accelerates downward, you feel lighter. The force exerted by the scale is known as apparent weight; it does not change with …
Elevator Physics
the elevator has no acceleration (standing still or moving with constant velocity); the elevator has … The normal force is equal to your apparent weight.
Why is a person’s weight the same in a stationary elevator as when the elevator is moving at a constant velocity?
So, for a person at rest, their weight is simply their mass times the acceleration due to gravity. Now, for both cases you described, their weight would still be exactly the same since the elevator in both cases is traveling at constant speed. If there is no acceleration, then there cannot be any “extra” force.
What happens to the weight of a body in a lift which has a net upward acceleration Class 11?
Detailed Solution. So, when a lift accelerates upwards, the apparent weight of the person inside it increases. So, when a lift accelerates downwards, the apparent weight of the person inside it decreases.
Would you weigh less in an elevator? – Carol Hedden
Images related to the topicWould you weigh less in an elevator? – Carol Hedden
What forces are acting on an elevator?
The two forces acting on a person when he is moving in an elevator is the force of gravity and the normal force by the elevator. The two forces are of equal magnitude, and the elevator is static or moving with constant velocity. Their magnitudes are unequal when the elevator is accelerating upward or downward.
Why do you feel lighter when an elevator goes up?
But gravity is always pulling you down, so for you to slow down, the floor needs to push up on you less, so gravity can slow you down. Since the floor pushes on you less, you feel lighter.
What happens when you jump in an elevator?
Expect a broken leg or two, but you’ll live. (Some have suggested lying down in the lift, because it will distribute the force of impact over your whole body. This is a terrible idea – protect your brain! Some part of your body must absorb the impact, but head injury is the primary cause of death in falls.
Why does normal force change in an elevator?
This requires an increased normal force. When the elevator is accelerating downwards, it does not need to oppose gravity as much and so the normal force decreases to provide a net downward force from gravity.
What is the apparent weight of a person moving in a lift when it is moving upwards with an acceleration a B down wards with an acceleration A?
Apparent weight is equal to the actual weight. Apparent weight is equal to zero.
Which of the following cases represents that the apparent weight of a person in an elevator is equal to his her actual weight?
Solution : When elevator is at rest or in unifrom motion then <br> `a =0` <br> `:. W = n (g -a)` or `W (g + a)` <br> In both the cases `W = mg` <br> So real weight is equal to apparent weight when body is at rest or in unifrom motion.
When a body is moving with acceleration upward its apparent weight will be true weight?
| List I | List II |
|---|---|
| a) Lift is moving up with acceleration a | e) Apparent weight is greater than true weight |
| b) Lift is moving down with acceleration a | f) Apparent weight is zero |
| c) Lift is moving with uniformly velocity | g) Apparent weight is equal to true weight |
| d) Lift is freely falling | h) Apparent weight is less than true weight |
What does the scale read when the elevator is moving up at constant speed?
The elevator is moving up at a constant speed. read from the scale would be the same if the elevator was stopped. read from the scale would be the same if the elevator was stopped.
APPARENT WEIGHT IN LIFT/ ELEVATOR | CLASS 11 PHYSICS | LAWS OF MOTION
Images related to the topicAPPARENT WEIGHT IN LIFT/ ELEVATOR | CLASS 11 PHYSICS | LAWS OF MOTION
How do you find the weight?
The weight of an object is defined as the force of gravity on the object and may be calculated as the mass times the acceleration of gravity, w = mg. Since the weight is a force, its SI unit is the newton.
What produces the sensation of weight?
Sensation. The sensation of weight is caused by the force exerted by fluids in the vestibular system, a three-dimensional set of tubes in the inner ear.
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