Question

My dog and I are walking when she sees a squirrel and attempts to move straight forward in the horizontal. I must hold her leash and keep her from running away. My dog's weight is 21. kg. My weight is 66. kg. My dog is pulling with a force of 70 N at a 30 degree angle. How would I calculate the force I would apply to keep my dog in place? How can these changes be explained using Newton's Laws?

Answer 1

Weight of dog and person holding it doesn't matter in this case . According to Newton's third law which says that for every action there is an equal and opposite reaction so if your dog pulls you with 70N at 30° angle then you should also need to pull him with same force in same direction.in this way net force is zero and dog will not move.

I assume surface is frictionless to make you understand better.

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