Question

Classify the following simple machines : (a) A railway signal (c) A jack screw (e) A bread knife (b) A door knob (d) A staircase (f) A wheel barrow​

Answer 1

Answer:

a lever

c screw

e wedge

b wheel &axle

d inclined plane

f second class lever

Answer 2

See its there

and it is checked by my Physics teacher

a) lever (1st order)

b) screw

c) screw

d) Inclined plane

e) lever (3rd order)

f) lever (2nd order)

if you think it is right

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