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castortr0y [4]
3 years ago
5

A screen door spring is stretched

Physics
1 answer:
bija089 [108]3 years ago
8 0

Answer:

216.39 N/m

Explanation:

F = 64.7 N

x = 0.299 m

Plug those values into Hooke's Law:

F = kx

64.7 N = k(0.299 m)

---> k = 216.39 N/m

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Answer:

F' = 4F

Explanation:

When force applied to the end of the rod in perpendicular direction then net torque on the rod is given as

\tau = L F sin90

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so new value of torque is given as

\tau = \frac{L}{2}F' sin\theta

LF = \frac{L}{2}F' sin30

LF = \frac{F'L}{4}

so we have

F' = 4F

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Two wires, each of length 1.3 m, are stretched between two fixed supports. On wire A there is a second-harmonic standing wave wh
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