erika18marie
Answered

A brick is lying on a table in a state of static equilibrium. If the mass of the brick is 7.52 kilograms, what is the normal force exerted by the table on the brick?

A−73.7 newtons
B73.7 newtons
C80.7 newtons
D7.52 newtons
E8.07 newtons

I believe the answer is either A. or B.—I'm just not sure if it should be expressed as a negative or not because the force is acting in the opposite direction. 

Verified Answer :

MissPhiladelphia

In mechanics, the normal force is the component, perpendicular to the surface (surface being a plane) of contact, of the contact force exerted on an object . We calculate as follows:

∑F along x = 0 = F - Fn

Fn = F = mg = 7.52(9.81) = 73.77 N <------OPTION B

calburns0

Answer:

73.7 newtons

Explanation:

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