Question

which force is applied when a lady pulling at the rope tied to the collar of her dog

Answer 1

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PetSafe Easy Walk Harness

About: The PetSafe Harness utilizes two different no-pull technologies, as it not only comes with a front clip, but it tightens when your dog pulls too. Simple to use and easy to put on, this is probably one of the best options for first-time dog owners.