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Question:

The pushcart is the province or the driving force

The pushcart is the province or the driving force

Answer:

You can reduce the ground pressure in the vertical direction by pulling the cart, so you can reduce the friction.
Case 2: if it is in real life, then because there is friction between the car and the ground, friction is related to stress
Case 1: if the cart and pull force are in the same direction as the moving direction, the two forces are equal.

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