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Brums [2.3K]
2 years ago
8

What is the net force on these free body diagrams?

Physics
2 answers:
pentagon [3]2 years ago
7 0

A

The horizontal force cancels out. The two 4Ns go in opposite directions. So they don't affect the outcome.

The Vertical force is 6N up - 2 N down = 4 N Up

Answer 4 N up

B

The horizontal and vertical forces cancel out. Each gives 3N - 3N =0

The net force is 0

C

You only have horizontal forces on this one

5N - 3N = 2N  

The answer is 2N to the right.

Mama L [17]2 years ago
5 0

A).  4N up

B).  zero

C).  2N right

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<h3>How to solve for the normal force</h3>

The normal force is calculated using the work energy principle which is applied as below

K₁ + U₁ = K₂

k represents kinetic energy

U represents potential energy

the subscripts 1,2 , and 3 = a, b, and c

for 1 to 2

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Using summation of forces at B

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for 1 to 3

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at C

for normal force to be zero

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and v²₃ = 2g(h - R)

gR = 2gh - 2gR

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3R/2 = h

Learn more about normal force at:

brainly.com/question/20432136

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