Question

a) A beam of physical balance is an example of a
b) _______and______are two
factors by which a machine's capacity to do work can be
known.
c) A _______machinehas 100%
efficiency.
d) A nail with an inclined plane wound around it is a _______ .
e) _______ and _______ are examples of wedges.​

Answer 1

Answer:

a) -

b) mass and weight

c) simple machine

d) -

e) doorstopper and chisels