Class - VI
Physics
Time-20 min FM.-10
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1) Choose the correct option. [1*4=4]
a) The SI unit of mechanical advantage is _____
i) N ii) kg iii) none iv) m
b) The MA of class - 2 lever is _____
i) <1 ii) > 1 iii) = 1 iv
c) Axe is an example of ______simple machine
i) Lever ii) Wedge iii) Screw iv) Pulley
d) Mechanical Advantage of a simple machine is __
i) L/E ii) E/L iii) L+E iv) L*E
2) In a third-class lever the distance between the fulcrum and effort
is 12m, and the distance between effort and load is 8m. [1*4=4]
i) Draw the lever.
ii) Find the load arm.
iii) Find the mechanical advantage
iv) Give one example of a class three lever.
3) How many types of simple machines?
Name them with an example. [2]
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