January 2018

Question 1

What is a machine

Answer 1

Device that make tasks easier by changing the magnitude or the direction of the applied force

Question 2

What does IMA stands for and what does it means

Answer 2

Ideal mechanical advantage, is equal to the displacement of the effort force divide by the displacement of the resistance force

Question 3

What is MA and how can you calculate it if you have efficiency and IMA

Answer 3

Mechanical advantage, IMA x e/ 100

Question 4

Six simple machines

Answer 4

Lever
Pulley
Wheel and axle
Wedge 
Inclined plains 
Screw

Question 5

Formula for lever IMA

Answer 5

Le/lr

Question 6

Formula for pulley IMA

Answer 6

supporting ropes

Question 7

Formula for wheel and axle IMA

Answer 7

re/rr

Question 8

Formula for Wedge IMA

Answer 8

Length/ width

Question 9

Formula for inclined plane IMA

Answer 9

H/l

Question 10

Formula for screw IMA

Answer 10

2pi radius/ length

Question 11

How I add more mechanical advantage for lever

Answer 11

More length on the top

Question 12

How I add more mechanical advantage for pulley

Answer 12

Adding more supporting ropes

Question 13

How I add more mechanical advantage for wheel and axle

Answer 13

Wheel bigger and the axle smaller

Question 14

How I add more mechanical advantage for wedge

Answer 14

Adding more sharpness

Question 15

How I add more mechanical advantage for inclined plane

Answer 15

To be more inclined

Question 16

How I add more mechanical advantage for screw

Answer 16

By adding more closer spirals

Question 17

The general formula for IMA

Answer 17

Distance effort/ resistance distance

Question 18

The 2 generals formulas for MA

Answer 18

Resistance force/ effort force

IMA x efficiency/ 100

Question 19

Both formulas for efficiency

Answer 19

MA/IMA

Work out/ work inn = Fr(dr)/Fe(de)