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DerKrebs [107]
2 years ago
5

How much force is needed to pull a spring with a spring constant of 20 N/m a distance of 25 m?

Physics
1 answer:
loris [4]2 years ago
6 0
F=-kx
F=-20 * 25
F=500 N
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3 years ago
You need to repair a gate on the farm. The gate weighs 100 kg and pivots as indicated. A small diagonal bar supports the gate an
tekilochka [14]

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The force is  F = 3920 \ N

Explanation:

The diagram for this question is shown on the first uploaded image

   From the question we are told that

          The weight of the gate is G  =  100\  kg

 

The vertical component of F is  F_y =  F\ sin  \theta

   From the diagram , taking moment about the pivot we have  

                W_g  * 2 - F_y  * 1 =  0

Where W_g  is the weight of the gate evaluated as

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