Question

A woman takes her dog Rover for a walk on a leash. To get the little pooch moving forward, she pulls on the leash with a force of 20.0 N at an angle of 37° above the horizontal. How much force is tending to lift Rover off the ground?

A. 20.0 N


B. 42.1 N


C. 12.0 N


D. 16.0 N

Answer 1

16.0 N

i got it correct

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Answer 2

Answer: option C: 12.0 N

The women pulls the dog with a force of 20 N at an angle of
`37^o` from the horizontal. we can write this in terms of components.

Horizontal component=
`20 cos(37^o)=16 N`

Vertical component =
`20 sin(37^o)=12.0 N`

The horizontal component would tend to make the dog move forward.

On the other hand, the vertical component would tend lift it off the ground.

Hence, the correct option is C: 12.0 N.