Physics 15 Torque (11 of 27) Example 1: Forces=?

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In this video I will find the forces on a beam leaning against and connected on a pivot on a wall, and resting on the ground.

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  1. Michel van Biezen
  2. ilectureonline
  3. ilectureonline.com
  4. Mike
  5. Mike van Biezen
  6. van Biezen
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Комментарии
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This problem looks simple but one of hardest to get around. I still can't generalise how a 240N force at one point produce 320N force.

debendragurung
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1:56 Mr. Michel, could you please clarify how the force from the ground is totally vertical? I assumed it would be in the direction of the beam so as to have two x and y components.

andrewjustin
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Mr. Michel please also elucidate on how the net forces are zero in both x and y plane?

andrewjustin
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is the Force y of the ground negative 320N since CW is negative? (bottom)

same with the 240 N in the Force x of the beam hinge? is it also negative?

xrisku
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Your vid’s are the best analysis of statics I’ve seen !! I studied physics years ago and never felt comfortable with the static forces’ principles. Thanks for clarifying these concepts.

ewalton
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sir, thank u so much. U have no idea how hard physics is for me as im not a math kind of person. But u made a dummy like me to understand this easily. thank u again

deannaroszlin
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at 7:13, don't we have to add in center of gravity of the beam as well?

livingdestiny