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S_A_V [24]
3 years ago
13

An object is hanging by a string from the ceiling of an elevator. The elevator is moving upward with a constant speed. What is t

he magnitude of the tension in the string?
Physics
1 answer:
lana [24]3 years ago
7 0

Answer:

Equal to the weight of the object

Explanation:

There are two forces acting on the object hanging on the string:

- The tension in the string, T, acting upward

- The weight of the object, mg, acting downward

We can write Newton's second law as:

T-mg=ma

where a is the acceleration of the object.

Here we are told that the elevator is moving at constant speed: this means that the acceleration of the object is zero, therefore a = 0 and the equation becomes

T=mg

therefore, the tension in the string is equal to the weight of the object.

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