An object with a mass of 5 kg is hanging from a spring with a constant of 3 (kg)/s^2. If the spring is stretched by 2 m, what is the net force on the object?

1 Answer
Apr 18, 2018

vec F_(n et)=44N

Explanation:

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As the ball is pulled by a distance x, a restoring force vec F_(spri ng)=kx acts on the ball and pulls it in the upward direction.

The weight of the ball mvec g acts in the downward direction.

Therefore the net force

" "vec F_(n et)=mvec g-vec F_(spri ng)

rArr" "vec F_(n et)=mvec g-kx

rArr" "vec F_(n et)=5xx10-3xx2

rArr" "vec F_(n et)=44N