Basics of problem solving with forcesPart 1

What is a force?

A push or a pull

What is the difference between mass and weight?

What is the difference between mass and weight?

What is the difference between mass and weight?

What is a normal force?

What is a normal force?

equilibrium

What is a normal force?

What is static friction?

What is static friction?

What is static friction?

,f static s NF F

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 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 in free fall with 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 sitting on a desk being pushed but not moving?

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 no friction?

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

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

What is kinetic friction?

f k NkineticF F

What is kinetic friction?

f k NkineticF F

What is kinetic friction?Surface combination Coefficient of

static friction,

Coefficient of kinetic friction,

Oak on oak (parallel grain) 0.62 0.48Oak on oak (cross grain) 0.54 0.32

Zinc on cast iron 0.85 0.21Hard steel on hard steel 0.78 0.42

Mild steel on brass 0.51 0.44Leather on oak (parallel grain) 0.61 0.52

Nickel on nickel 1.1 0.53Ice on hard surface 0.05 0.02

Brake pad on iron (dry) 0.4 0.4Brake pad on iron (wet) 0.2 0.2

The next podcast covers the

“Force Method.”