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why is the tension felt by the car and the trailer is the same by the same string? Watch

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    hello, why is the tension felt by the car and the trailer is the same by the same string when the car is towing the trailer?
    I understand that there is tension pulling the trailer foward but why is there tension in the opposite direction also?
    thank you
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    Newton's third law.

    The force acting on the car from pulling the trailer equals the force acting on the trailer from being pulled by the car.

    A rope is a hard thing to conceptualise. But think of a simpler bit equivalent scenario, a car pulling a trailer by a chain. Now apply Newton's third law to every adjacent pair of chain links, and you'll see how the (same) force - tension - is transmitted from the car to the trailer. A rope is essentially the same.
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    (Original post by mik1a)
    Newton's third law.

    The force acting on the car from pulling the trailer equals the force acting on the trailer from being pulled by the car.

    A rope is a hard thing to conceptualise. But think of a simpler bit equivalent scenario, a car pulling a trailer by a chain. Now apply Newton's third law to every adjacent pair of chain links, and you'll see how the (same) force - tension - is transmitted from the car to the trailer. A rope is essentially the same.
    Thank you so much for the reply
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    (Original post by anonymousdude24)
    Thank you so much for the reply
    You can also imagine an analogy of you pulling a suitcase. You pull the suitcase forwards, but you can also feel it pulling you back! So the same is true of the car.
 
 
 
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