1. Which of the following is not a simple machine?
(a) Pulley
(b) Lever
(c) Wedge
(d) Automobile
2. The force applied to the machine is the
(a) Effort.
(b) Frictional.
(c) Horizontal.
(d) Resistance.
3. Efficiency is
(a) The same as mechanical advantage.
(b) A percentage.
(c) Impossible to determine.
4. A second-class lever has
(a) Two fulcrums.
(b) Two effort arms.
(c) Two resistance arms.
(d) A resistance arm shorter than the effort arm.
5. A pulley has eight strands holding the resistance. The mechanical advantage is
(a) 4.
(b) 8.
(c) 16.
(d) 64.
6. The mechanical advantage of a compound machine
(a) Is the sum of the MA of each simple machine.
(b) Is the product of the MA of each simple machine.
(c) Cannot be found.
(d) Is none of the above.