Net Force.

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Presentation transcript:

Net Force

Warm-up A force of 78.3 N of force is applied to a suitcase. Find the horizontal and vertical components of force.

Step 1&2:

Find the net force of these simple problems

Don’t Write Today I will be nice and all the vertical forces will be canceling each other out. That won’t be the case for much longer.

A box, sitting on the floor, is being pulled with 80 N of force 30 degrees above the horizontal. If the friction force is 40 N in the opposite direction. Find the net force acting on the box. Question, if the normal force is the force used to keep something from falling into the surface it’s in contact with. How come the normal force isn’t equal to the weight in this problem? Challenge: If the object has a mass of 5kg. How fast is it accelerating?

A man pushes the box with a force in at an angle A man pushes the box with a force in at an angle. The angle is above the horizontal. If the friction force is . What is the net force acting on the box?