Page 384 - GMAT 2017b_Neatb

Mechanical Comprehension Test 1

77. In the figure shown, the pulley system consists of a
fixed block and a movable block. The theoretical
mechanical advantage is
(A) 1 Worm
(B) 2
(C) 3 gear
(D) 4

78. A single movable block is being used in the figure
shown below. The person is lifting a 200-pound cask 80. The figure above shows a worm and gear. If the worm
with approximately how great a pull (disregard rotates slowly on its shaft, the gear will
friction, weight of pulley, and weight of line)? (A) turn very slowly.
(B) turn rapidly.
(C) oscillate.
(D) not turn.

C
B
D
A

81. At which point was the basketball above moving
200 lbs slowest?
(A) A
(A) 50-pound pull (B) B
(B) 100-pound pull (C) C
(C) 200-pound pull (D) D
(D) 250-pound pull

10¢¢ A B

Sprocket wheel Chain

82. In the figure above, if gear A makes 14 revolutions,
W1 W2 gear B will make
(A) 9 revolutions.
79. In the figure shown above, one complete revolution of (B) 14 revolutions.
the sprocket wheel will bring weight W2 higher than (C) 17 revolutions.
weight W1 by (D) 21 revolutions.
(A) 20 inches
(B) 30 inches 1 A A
(C) 40 inches B
(D) 50 inches
C
2

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