# An object with a mass of #4 kg# is hanging from a spring with a constant of #2 (kg)/s^2#. If the spring is stretched by # 16 m#, what is the net force on the object?

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The net force on the object is 32 N.

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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

- How fast will an object with a mass of #16 kg# accelerate if a force of #8 N# is constantly applied to it?
- An object, previously at rest, slides #3 m# down a ramp, with an incline of #(pi)/3 #, and then slides horizontally on the floor for another #25 m#. If the ramp and floor are made of the same material, what is the material's kinetic friction coefficient?
- An object with a mass of #12 kg# is on a surface with a kinetic friction coefficient of # 1 #. How much force is necessary to accelerate the object horizontally at # 3 m/s^2#?
- If the length of a #44 cm# spring increases to #58 cm# when a #5 kg# weight is hanging from it, what is the spring's constant?
- If an object is moving at #18 m/s# over a surface with a kinetic friction coefficient of #u_k=12 /g#, how far will the object continue to move?

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