a child of mass 25 kg sits on a chair. What is the normal force acting on the child. A 79.2N B 133N C 25.0 N D 245N

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The answer you are looking for is D. 245N.  Work shown: -mg= -25*9.8=245 N So, gravity is pulling down the chair, the chair is exerting a normal force upward in response.  **Hope this helps you! If you have any further questions then message me. Have a nice day! :)** P.S. Can you give me brainliest? 

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