Problem 7: You have a horizontal grindstone (a disk) that is 86 kg, has a 0.36 m radius, is turning at 85 rpm (in the positive direction), and you press a steel axe against the edge with a force of 21 N in the radial direction. F Part (a) Assuming that the kinetic coefficient of friction between steel and stone is 0.20, calculate the angular acceleration of the grindstone i rad/s2. Numeric : A numeric value is expected and not an expression. a = Part (b) What is the number of turns, N, that the stone will make before coming to rest? Numeric : A numeric value is expected and not an expression. N=
Problem 7: You have a horizontal grindstone (a disk) that is 86 kg, has a 0.36 m radius, is turning at 85 rpm (in the positive direction), and you press a steel axe against the edge with a force of 21 N in the radial direction. F Part (a) Assuming that the kinetic coefficient of friction between steel and stone is 0.20, calculate the angular acceleration of the grindstone i rad/s2. Numeric : A numeric value is expected and not an expression. a = Part (b) What is the number of turns, N, that the stone will make before coming to rest? Numeric : A numeric value is expected and not an expression. N=
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 answer question 7
Transcribed Image Text:Problem 7: You have a horizontal grindstone (a disk) that is 86 kg, has a 0.36 m
radius, is turning at 85 rpm (in the positive direction), and you press a steel axe
against the edge with a force of 21 N in the radial direction.
F
f
Part (a) Assuming that the kinetic coefficient of friction between steel and stone is 0.20, calculate the angular acceleration of the grindstone in
rad/s2.
Numeric : A numeric value is expected and not an expression.
a =
Part (b) What is the number of turns, N, that the stone will make before coming to rest?
Numeric : A numeric value is expected and not an expression.
N =
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