Basics of problem solving with forces Part 1. What is a force? A push or a pull.

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Presentation transcript:

Basics of problem solving with forces Part 1

What is a force? A push or a pull

What is the difference between mass and weight?

What is a normal force?

equilibrium

What is static friction?

What is a free body diagram?

How would you draw a FBD for an object in free fall with no air resistance?

How would you draw a FBD for an object in free fall with air resistance?

How would you draw a FBD for an object sitting on a desk being pushed but not moving?

How would you draw a FBD for an object on a tilted surface with no friction?

How would you draw a FBD for an object on a tilted surface with friction?

What is kinetic friction?

Surface combination Coefficient of static friction, Coefficient of kinetic friction, Oak on oak (parallel grain) Oak on oak (cross grain) Zinc on cast iron Hard steel on hard steel Mild steel on brass Leather on oak (parallel grain) Nickel on nickel Ice on hard surface Brake pad on iron (dry) 0.4 Brake pad on iron (wet) 0.2

The next podcast covers the “Force Method.”