Formula sheet

Question 1

Formula for Mechanical Advantage

Answer 1

Question 2

Velocity Ratio Formula ?

Answer 2

Question 3

Efficiency formula?

Answer 3

Question 4

Moment ?

Answer 4

Question 5

Force?

Answer 5

Question 6

PE= ?

Answer 6

Question 7

kenetic energy?

Answer 7

Question 8

two formulas used for pressure?

Answer 8

Question 9

if a body is in equilibrium, the starting line of working should start with? (there is 3)

Answer 9

Sum of Forces = 0

Sum of Horizontal Forces = 0

Sum of Vertical Forces = 0

Question 10

Formula for Velocity Ratio

Answer 10

Question 11

Mechanical Advantage for Gears

Answer 11

Question 12

Velocity ratio for pulleys

Answer 12

Question 13

What is the formula for bending stress and what do the variable mean

When given second moment of area

Answer 13

M = bending moment (nm)
y = distance from nuetral axis (m)
I = second moment of area (m^4)

largest bending moment is usuall taken from BM diagram

Question 14

What are the formulas for Work?

Answer 14

Work = change in energy (J)
Work = Fs

Force x distance

Question 15

What are formulas for power

Answer 15

remember P = Fv and that P = change in energy/time

Question 16

What is the formula for shear stress

Answer 16

F = force (N)
A = cross sectional area (m^2)

Question 17

What is the formula for double shear

Answer 17

Stress = F/ 2 x A