Answer:
any person who opens the door he applies pulling force
Hi Pupil Here's Your answer :::
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When an object is moving with uniform circular motion, the centripetal acceleration of the object

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Because the body is moving with a uniform velocity and hence, there might not be any acceleration due to it.
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Hope this helps .......
The equation used to calculate the weight of an object on a plant is F = ma. "F" is the force measures in Newtons, "m" is the mass measures in grams and "a" is the acceleration that accur due to gravity.