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All questions of Forces and Magnetism for Year 4 Exam
What is the primary function of a normal force acting on an object in contact with another surface?- a)To prevent the object from moving through the surface
- b)To create friction between the two surfaces
- c)To attract the object towards the center of the Earth
- d)To exert an upward force greater than gravity
Correct answer is option 'A'. Can you explain this answer?
What is the primary function of a normal force acting on an object in contact with another surface?
a)
To prevent the object from moving through the surface
b)
To create friction between the two surfaces
c)
To attract the object towards the center of the Earth
d)
To exert an upward force greater than gravity
 | Crafty Classes answered |
The normal force acts as a support force that prevents an object from moving through the surface it is resting upon. For example, when a book is placed on a table, the table exerts an upward normal force that balances the downward gravitational force exerted by the book, keeping it stationary. This interaction helps maintain stability and prevents objects from falling through surfaces.
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