Page 399 - GMAT 2017b_Neatb

Mechanical Comprehension Test 2

79. A force of 4 pounds is required to move a spring 6 83. If 9 full turns are required to move the nut 0.75 inches,
inches. How far will the spring stretch under 6 pounds of how many threads per inch does the screw have?
force? (A) 10
(A) 6 inches (B) 12
(B) 9 inches (C) 14
(C) 12 inches (D) 16
(D) 15 inches

A B

84. What is the mechanical advantage of the pulley
80. Two pipes are used to drain liquid from a 100-gallon system shown here?
barrel. Pipe A is inches in diameter and pipe B is 4 (A) 1
inches in diameter. How much faster does liquid leave (B) 2
the barrel through pipe B compared to pipe A? (C) 3
(A) Liquid leaves both pipes at the same rate. (D) 4
(B) Liquid flows out of pipe B twice as fast.
(C) Liquid flows out of pipe B four times as fast. 85. A cold beverage will stay cold longest in which of the
(D) Liquid flows out of pipe B eight times as fast. following containers?
(A) a glass bottle
(B) an aluminum can
(C) a plastic bottle
(D) a paper cup

3
2 4
81. The type of scale shown in the diagram is based on what
simple machine?
(A) the lever
(B) the pulley
(C) the inclined plane 1 5
(D) the screw

82. Steel battleships are able to float because
(A) steel is less than water.
(B) steel is denser than water. 86. If gear 3 turns counterclockwise, which other gear(s),
(C) the ship displaces its weight in water. if any, will turn clockwise?
(D) the ship displaces less than its weight in water. (A) 1 and 5
(B) 2 and 4
(C) All will turn clockwise.
(D) None will turn clockwise

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