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24 votes
A 1-kg trophy sits on a shelf. What is the normal force and the direction exerted by the shelf? (Acceleration due to gravity is 9.8 m/s/s.)

1 N up
1 N down
9.8 N up
9.8 N down

1 Answer

6 votes
9.8 N upwards
Normal for it the force opposing gravity in the direction opposite to the surface
User Oikonomopo
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