Diagonals with 2 unknowns in 2 equations

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12/7/2018
Diagonals with 2 unknowns in 2 equations
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Diagonals with 2 unknowns in 2 equations (02 Dynamics)
Current Score : – / 8
Renee Thomas
IB / AP Physics 1, section 2
Instructor: Shem Thompson
Due : Monday, December 10, 2018 09:00 AM PSTLast Saved : n/a Saving... ()
1. –/1 points
These next few problems involve solving with when you have 2 unknowns in 2 equations diagonals. Review the lecture/video 02.10c if necessary.
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2. –/3 pointsOSColPhysAP2016 4.5.WA.039.
(a) A spider hangs motionless from a single vertical strand of spiderweb. Calculate the tension (in N) in the vertical spiderweb if the spider has a mass of
5.00
10-5 kg.
Tvertical =
N
(b) Now, the same spider sits motionless in the middle of a (nearly) horizontal strand of spiderweb, as shown in the figure below.
The strand sags at an angle of 10.0° below the horizontal. Calculate the tension (in N) in this (nearly) horizontal strand.
Tnew =
N
Compare this with the tension in the vertical strand that you found in part (a) (find their ratio).
Tnew
Tvertical
=
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Reading
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Diagonals with 2 unknowns in 2 equations
3. –/2 pointsOSColPhys1 4.P.044.WA.
A 18.5 kg traffic light is suspended from two cables as shown in the figure below.
Find the tension in each cable in newtons.
left cable
N
right cable
N
Supporting Materials
Physical Constants
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4. –/2 points
An AP Question
A weight can be hung in any of the following four ways. In which case is the string most likely to break?
D
C
all the same
B
A
Explain your reasoning.
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