Name the machine to which the following belong. (1x4=4)
a) Needle
b) Sugar tongs
c) Staircase
d) Door knob
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b) Sugar tongs — A lever (lever of class III)
c) stair case — An inclined plane
d) Door knob — Wheel and axle
a) Needle — Wedge
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Explanation:
a) needle- wedge
b) sugar tongs-a lever
c)staircase-An inclined plane
d)door knob-wheel and axle
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