35 The bottom of a heavy block is covered with sandpaper. The block is repeatedly slid 1.0 meter at constant speed across a uniform, horizontal wooden plank by the application of a constant horizontal force. As the coefficient of friction between the sandpaper and the plank decreases, the amount of work done in sliding the block 1.0 meter along the plank at constant speed (1) decreases (2) increases (3) remains the same
35 The bottom of a heavy block is covered with sandpaper. The block is repeatedly slid 1.0 meter at constant speed across a uniform, horizontal wooden plank by the application of a constant horizontal force. As the coefficient of friction between the sandpaper and the plank decreases, the amount of work done in sliding the block 1.0 meter along the plank at constant speed (1) decreases (2) increases (3) remains the same
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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please help with questions 34 and 35
Transcribed Image Text:35 The bottom of a heavy block is covered with
sandpaper. The block is repeatedly slid 1.0 meter
at constant speed across a uniform, horizontal
wooden plank by the application of a constant
horizontal force. As the coefficient of friction
between the sandpaper and the plank decreases,
the amount of work done in sliding the block
1.0 meter along the plank at constant speed
(1) decreases
(2) increases
(3) remains the same
Transcribed Image Text:34 An aluminum pie pan is attached to a string and
suspended from a hook, as shown in the diagram
below. The pan is released from position A and
swings through the air to position B.
Aluminum
pie pan.
A
What is the relationship between the kinetic
energy at position B, KEB, and the gravitational
potential energy at position A, PE,with respect
to B?
(1) KEB is equal to PEA minus work done
against friction.
(2) KEB is equal to the PE plus work done
against friction.
(3) KEg is equal to PEA-
(4) KEg is equal to 2PE4-
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