2. Mechanics

Question 1

What is the friction formula and what are the variables?

Answer 1

Question 2

What are the forces involved in a friction problem?

Answer 2

Question 3

Type 1 friction problem

Solve for P on a hortizontal surface.

Answer 3

In this problem the pulling force equals the friction force just at the point of moving.

Question 4

Type 2 Find the force at an angle on a hortizontal surface.

Answer 4

Here you need to find the angle of static friction (this then cancels out the Rn and Ff forces).

Once you have this add vectors 1,2,and 3 starting at weight.

Use the sine rule to solve for F.

Question 5

The VR for Gears is

Answer 5

Question 6

How do we determine the Speed ration for gears

Answer 6

Question 7

How is VR calculated on a pulley

Answer 7

Question 8

How is VR caculated on a pulley belt

Answer 8

Question 9

How do you calculated VR on inclined planes

Answer 9

Question 10

how do you caculated MA on inclinded panes

Answer 10

Question 11

How do you calculate VR on screws

Answer 11

Question 12

How do you calculated VR on hydraulic systems

Answer 12