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Asked Dec 5, 2019
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A 20.0 kg box is held at rest by two ropes that form theta=23 degrees angles with the vertical. An external force F is also applied vertically downward on the box. The force exerted by each of the two ropes is denoted by T of magnitude 660 N. A force diagram, showing the four forces that act on the box in equilibrium
, is shown in the figure. Use g=10m/s2. What is the magnitude of the external force F (in unit of N) applied on the box?
 
 
Ttheta theta T
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Ttheta theta T

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Step 1

At equilibrium, the expression f...

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F= 27'cos0- mg

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