Elevator Problems | Honors Physics

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What is apparent weight?

Back

Apparent weight is the weight of an object as perceived by an observer, which can differ from the actual weight due to acceleration. It is calculated as the normal force acting on the object.

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How do you calculate apparent weight when an object is accelerating upwards?

Back

When an object is accelerating upwards, the apparent weight can be calculated using the formula: Apparent Weight = Actual Weight + (mass × acceleration).

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How do you calculate apparent weight when an object is accelerating downwards?

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When an object is accelerating downwards, the apparent weight can be calculated using the formula: Apparent Weight = Actual Weight - (mass × acceleration).

Front

What is the formula for calculating weight?

Back

Weight is calculated using the formula: Weight = mass × gravitational acceleration (W = m × g), where g is approximately 9.81 m/s² on Earth.

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What happens to apparent weight when an elevator accelerates upwards?

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When an elevator accelerates upwards, the apparent weight of a person inside the elevator increases because the normal force acting on them increases.

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What happens to apparent weight when an elevator accelerates downwards?

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When an elevator accelerates downwards, the apparent weight of a person inside the elevator decreases because the normal force acting on them decreases.

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What is the significance of the acceleration due to gravity in weight calculations?

Back

The acceleration due to gravity (approximately 9.81 m/s²) is crucial in weight calculations as it determines the force exerted by gravity on an object, affecting its weight.

Front

How does mass affect apparent weight in an accelerating elevator?

Back

Mass directly affects apparent weight; a greater mass results in a greater apparent weight when the elevator accelerates upwards and a lesser apparent weight when it accelerates downwards.

Front

What is the role of normal force in determining apparent weight?

Back

The normal force is the force exerted by a surface to support the weight of an object resting on it. It is equal to the apparent weight when an object is in equilibrium.

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What is the difference between actual weight and apparent weight?

Back

Actual weight is the gravitational force acting on an object, while apparent weight is the perceived weight that can change based on acceleration and the forces acting on the object.