Page 396 - GMAT 2017b_Neatb

Mechanical Comprehension Test 2

(A) 96 pounds 61. Using the pulley system shown, how much force is
(B) 400 pounds required to lift an 80-pound weight?
(C) 300 pounds (A) 20 pounds
(D) 200 pounds (B) 40 pounds
(C) 80 pounds
57. The same type of plastic is used to make blocks of 3 (D) 160 pounds
cubes of different sizes. The first has a weight of 0.5
pounds, the second has a weight of 0.75 pounds, the 62. Raising a flag up a flagpole is most commonly
third has a weight of 1.5 pounds. Which of the following accomplished with what simple machine?
statements is true? (A) a lever
(A) All three cubes will either float or sink. (B) a pulley
(B) Cube 1 will float and cubes 2 and 3 will sink. (C) an inclined plane
(C) Cube 3 will float and cubes 1 and 2 will sink. (D) a gear
(D) Cubes 1 and 2 will float and cube 3 will sink.

1 2

3
58. A force of 8 pounds is required to move a spring 4
inches. How much force is required to move the spring 1
foot?
(A) 3 pounds
(B) 12 pounds 63. If gear 2 turns clockwise, which other gear(s), if any,
(C) 24 pounds will turn clockwise?
(D) 36 pounds (A) 1 only
(B) 3 only
59. A screw has 7 threads per inch. How many full turns are
(C) 1 and 3
necessary for the nut to travel 3 inches? (D) none
(A) 12 turns
(B) 15 turns
(C) 18 turns
(D) 21 turns

60. Why is oil added to an engine? 12 feet 12 feet
(A) Engine burn oil.
(B) Oil helps gasoline burn better.
(C) Oil increases friction in the better. 126 pounds
(D) Oil decreases friction in the engine.

64. In the diagram, Andre wants to lift a 126-pound block
using a lever. If the block is 12 feet from the pivot point
and Andre is 12 feet beyond that, how much force must
he apply to lift the block?
(A) 126 pounds
(B) 63 pounds
(C) 75 pounds
(D) 144 pounds

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