mathematical components

Question 1

work

Answer 1

when a force causes motion
- 1 joule = 1 N moved one metre

Question 2

energy

Answer 2

measure of capacity to do work stored in an object
MECHANICAL: eg potential n kinetic
KINETIC: energy possess due to motion
POTENTIAL: energy due position

Question 3

power

Answer 3

rate at which work is done (watts)

Question 4

mechanical advantage

Answer 4

measure of the benefit of using simple machines
- load/effort

Question 5

velocity ratio

Answer 5

ratio of distanced moved by effort compared to distance moved by load
- effort arm/load arm

Question 6

efficiency

Answer 6

n = ma/vr x 100
- ma always lower than vr

Question 7

simple machines 5

Answer 7

make it easier to perform something with less effort required
LEVEL, WHEEL AND AXLE, INCLINED PLANE, WEDGE, SCREW

Question 8

FIRST ORDER LEVER

Answer 8

E DOWN, PIVOT, L DOWN
- ma and vr greater or less than one
- head and neck
- forearm and tricep

Question 9

SECOND ORDER LEVER

Answer 9

PIVOT, L DOWN, E UP
- MA VR HIGHER THAN ONE
- lifting your heel

Question 10

THIRD ORDER LEVER

Answer 10

PIVOT, E UP, L DOWN
- MA, VR LESS THAN ONE
- forearm and bicep