QI: A box weighing 100 N is at rest on a horizontal floor. The coefficient of the static friction F sin 0 between the box and the floor is 0.4. What is the F cos @ smallest force exerted eastward and upward at an angle of 30° with the horizontal that can start the box in motion?
QI: A box weighing 100 N is at rest on a horizontal floor. The coefficient of the static friction F sin 0 between the box and the floor is 0.4. What is the F cos @ smallest force exerted eastward and upward at an angle of 30° with the horizontal that can start the box in motion?
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.6: The Inverse Trigonometric Functions
Problem 74E
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![* Untitled Question
QI:
A box weighing 100 N is at rest on a horizontal
floor. The coefficient of the static friction
F sin
between the box and the floor is 0.4. What is the
smallest force exerted eastward and upward at an
angle of 30° with the horizontal that can start the
box in motion?
F cos e
Q2:
Use dimensional analysis to determine which of the following equation is certainly
wrong:
A= ut F-
v= (2gh)"2
Where 2 and h are the lengths and [ F] = [ MLT]. The other symbols have their usual
meaning?
Q3:
What is the sum ä +b if a (-4.0 m) i+ (3.0 m) "j and b(-11.0 m) i+ (7.0 m) j?
What are the (b) magnitude and (c) direction of a + b?
Q4:
Figure shows three forces applied to a trunk that
moves leftward by 3.00 m over a frictionless floor.
The force magnitudes are Fl = 7.00 Ib, F2= 10.00 Ib,
and F3 = 3.00 N, and the indicated angle is O= 60.0°.
During the displacement, (a) what is the net work done
on the trunk by the three forces and (b) does the kinetic
energy of the trunk increase or decrease?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F43d1b920-b176-4163-a171-e89f440edd31%2F5c090cb4-db37-4df0-8946-b9b2e0bb4c28%2F2hofpxl_processed.jpeg&w=3840&q=75)
Transcribed Image Text:* Untitled Question
QI:
A box weighing 100 N is at rest on a horizontal
floor. The coefficient of the static friction
F sin
between the box and the floor is 0.4. What is the
smallest force exerted eastward and upward at an
angle of 30° with the horizontal that can start the
box in motion?
F cos e
Q2:
Use dimensional analysis to determine which of the following equation is certainly
wrong:
A= ut F-
v= (2gh)"2
Where 2 and h are the lengths and [ F] = [ MLT]. The other symbols have their usual
meaning?
Q3:
What is the sum ä +b if a (-4.0 m) i+ (3.0 m) "j and b(-11.0 m) i+ (7.0 m) j?
What are the (b) magnitude and (c) direction of a + b?
Q4:
Figure shows three forces applied to a trunk that
moves leftward by 3.00 m over a frictionless floor.
The force magnitudes are Fl = 7.00 Ib, F2= 10.00 Ib,
and F3 = 3.00 N, and the indicated angle is O= 60.0°.
During the displacement, (a) what is the net work done
on the trunk by the three forces and (b) does the kinetic
energy of the trunk increase or decrease?
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