Friction

Front

Which is larger, static coefficient or kinetic coefficient of friction?

Back

static

Front

What is the weight of a 5kg object?

Back

about 50 N

Front

How much force would it take to move a 3kg object from rest? (μ = 0.5 and 0.1)

Back

about 15 N

Front

The coefficient of static friction is about 1.0 so the critical angle would be

Back

45 degrees

Front

A box is sitting on an incline and begins to slide at about 30 degrees. The coefficient of friction is about: 0.6, 1.1, 0.36, 0.2

Back

0.6

Front

Force that holds the two surfaces together

Back

normal force

Front

Normal and parallel forces are two parts of which larger force?

Back

weight

Front

μ represents

Back

the roughness of the surfaces

Front

Which of the following is NOT a cause of friction?

• imperfections crashing together
• imperfections meshing together at rest
• molecular bonding
• lubrication

Back

lubrication

Front

When an object is on an incline and the angle gets bigger, which force also gets larger?

Back

Fp