1) A 0.30-kg ball is attached at the end of a 0.90-m-long stick. The ball and stick rotatein a horizontal circle. Because of air resistance, a continual push must be exerted onthe stick to keep the ball moving at a constant speed, causing a 0.036-Nm torque.Draw an extended force diagram showing the forces exerted on the ball and stickand use it to determine the magnitude of the resistive force that the air exerts on theball opposite its motion. What assumptions did you make?Ability A14: Is able to construct an extended force diagramNeeds WorkInadequateFD contains no errors invectors or vector placementbut lacks a key feature suchas labels of forces with twosubscripts or the location ofthe intended axis ofrotation.FD is constructed butcontains major errors suchas incorrect or mislabeledforce vectors, forces exertedfrom incorrect locations, ordoes not identify the axis ofrotation.Ability D7: Is able to choose a productive mathematical procedure for solving the problemInadequateNeeds WorkCorrect and completemathematical procedure isdescribed but an error ismade in the calculations. Allunits are consistent.AdequateThe diagram contains noerrors and each force islabeled so that it is clearlyunderstood what each forcerepresents and where theaxis of rotation is.AdequateMathematical procedure isfully consistent with thedesign. All quantities arecalculated correctly withproper units. Final answer ismeaningful.A mathematical procedure isdescribed, but is incorrector incomplete, due to whichthe final answer cannot becalculated. Or units areinconsistent.MissingNo representation isconstructed.MissingMathematical procedure iseither missing, or theequations written down areirrelevant to the design.

Given: The mass of the ball: →m=0.30 Kg Length of the stick: →L=0.90 m Torque applied for the…

1) A 0.30-kg ball is attached at the end of a 0.90-m-long stick. The ball and stick rotate in a horizontal circle. Because of air resistance, a continual push must be exerted on the stick to keep the ball moving at a constant speed, causing a 0.036-Nm torque. Draw an extended force diagram showing the forces exerted on the ball and stick and use it to determine the magnitude of the resistive force that the air exerts on the ball opposite its motion. What assumptions did you make?

1) A 0.30-kg ball is attached at the end of a 0.90-m-long stick. The ball and stick rotate in a horizontal circle. Because of air resistance, a continual push must be exerted on the stick to keep the ball moving at a constant speed, causing a 0.036-Nm torque. Draw an extended force diagram showing the forces exerted on the ball and stick and use it to determine the magnitude of the resistive force that the air exerts on the ball opposite its motion. What assumptions did you make?

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Concept explainers

Forming and Shaping

Metal forming is a category of metalworking process through which the material can be given the desired shape and size by subjecting it to plastic deformation, where the component undergoes bulk deformation process upon application of loads. Unlike the shearing and machining process, the material does not undergo up to a failure point as indicated in the stress-strain curve. Hence, the stresses induced during the forming process are greater than yield strength but less than the failure strength of the material. The process does not lead to the loss of material, so it can be said to be an economical process. During forming, the material is subjected to tensile forces, compressive forces, bending, and shearing loading conditions. The material should possess the property of ductility to undergo the forming process.

Question

1) A 0.30-kg ball is attached at the end of a 0.90-m-long stick. The ball and stick rotate
in a horizontal circle. Because of air resistance, a continual push must be exerted on
the stick to keep the ball moving at a constant speed, causing a 0.036-Nm torque.
Draw an extended force diagram showing the forces exerted on the ball and stick
and use it to determine the magnitude of the resistive force that the air exerts on the
ball opposite its motion. What assumptions did you make?
Ability A14: Is able to construct an extended force diagram
Needs Work
Inadequate
FD contains no errors in
vectors or vector placement
but lacks a key feature such
as labels of forces with two
subscripts or the location of
the intended axis of
rotation.
FD is constructed but
contains major errors such
as incorrect or mislabeled
force vectors, forces exerted
from incorrect locations, or
does not identify the axis of
rotation.
Ability D7: Is able to choose a productive mathematical procedure for solving the problem
Inadequate
Needs Work
Correct and complete
mathematical procedure is
described but an error is
made in the calculations. All
units are consistent.
Adequate
The diagram contains no
errors and each force is
labeled so that it is clearly
understood what each force
represents and where the
axis of rotation is.
Adequate
Mathematical procedure is
fully consistent with the
design. All quantities are
calculated correctly with
proper units. Final answer is
meaningful.
A mathematical procedure is
described, but is incorrect
or incomplete, due to which
the final answer cannot be
calculated. Or units are
inconsistent.
Missing
No representation is
constructed.
Missing
Mathematical procedure is
either missing, or the
equations written down are
irrelevant to the design.

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