6.7 • Two blocks are connected by a very light string passing over a massless and frictionless pulley (Fig. E6.7). Traveling at constant speed, the 20.0 N block moves 75.0 cm to the right and the 12.0 N Figure E6.7 20.0 N block moves 75.0 cm downward. 12.0 N (a) How much work is done on the 12.0 N block by (i) gravity and (ii) the tension in the string? (b) How much work is done on the 20.0 N block by (i) gravity, (ii) the tension in the string, (iii) friction, and (iv) the normal force? (c) Find the total work done on each block

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Chapter1: Units, Trigonometry. And Vectors
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Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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6.7 • Two blocks are connected Figure E6.7
by a very light string passing over
a massless and frictionless pulley
20.0
(Fig. E6.7). Traveling at constant
speed, the 20.0 N block moves
75.0 cm to the right and the 12.0 N
N
block moves 75.0 cm downward.
12.0
N
(a) How much work is done on
the 12.0 N block by (i) gravity
and (ii) the tension in the string?
(b) How much work is done on the 20.0 N block by (i) gravity, (ii) the
tension in the string, (iii) friction, and (iv) the normal force? (c) Find the
total work done on each block.
Transcribed Image Text:6.7 • Two blocks are connected Figure E6.7 by a very light string passing over a massless and frictionless pulley 20.0 (Fig. E6.7). Traveling at constant speed, the 20.0 N block moves 75.0 cm to the right and the 12.0 N N block moves 75.0 cm downward. 12.0 N (a) How much work is done on the 12.0 N block by (i) gravity and (ii) the tension in the string? (b) How much work is done on the 20.0 N block by (i) gravity, (ii) the tension in the string, (iii) friction, and (iv) the normal force? (c) Find the total work done on each block.
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