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
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
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
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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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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