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Some questions about the integral method of physical mechanics A block of wood is on an inclined plane. Give the block a force F upward along the inclined plane to make it move at a constant speed (the inclined plane is stationary relative to the ground). The teacher said that the block and the inclined plane are in equilibrium at this time. You can take them as a whole, and then use the external force F to analyze them. I have a problem. The condition for two objects to be in equilibrium is that there is an external force F acting on them, Then add an external force F in the overall analysis, isn't it repeated? I wonder if you gods can understand my thinking
I have a question. The condition for two objects to be in equilibrium is that there is an external force F acting on them. (what is the equilibrium condition?) then, when we analyze the whole system, we should add another external force F, which is not repeated? I wonder if you gods can understand my thinking
Judging from your questions, there are still many things you don't understand
This problem is analyzed according to my thoughts and ideas
Holistic approach:
Gravity g = g 1 + G 2, vertical supporting force FN, pulling force F along inclined plane, friction force F given by ground, horizontal backward
M was isolated and analyzed separately
m: Gravity G1 = mg, the elastic force FN 'from the inclined plane, the upward pull f along the inclined plane, and the downward friction f' along the inclined plane
M: Gravity G2 = mg, the elastic force FN 'given by the object, the friction force FN' given by the inclined plane, the supporting force FN given by the ground
I give you the analysis of the force, one by one to draw, you understand
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