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16-11-2016
Physics

contestada

what is the net force needed to lift a full grocery sack weighing 210N uniformly?

Respuesta :

16-11-2016

If the sack weighs 210 newtons, then an upward force of 210 newtons
exactly cancels the downward force of gravity, and makes the net vertical
force on the bag zero.

ANY upward force that's greater than 210 newtons makes the net force
act upward on the bag, and causes it to accelerate upward.

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