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This is for pure understanding, and preparing yourself for exams, tests and assignments this will save you a lot of time and effort you do not need to go far practice everything here and view steps and answers after to maximize your potential.,R233,00
This is for pure understanding, and preparing yourself for exams, tests and assignments this will save you a lot of time and effort you do not need to go far practice everything here and view steps and answers after to maximize your potential.,
This is for pure understanding, and preparing yourself for exams, tests and assignments this will save you a lot of time and effort you do not need to go far practice everything here and view steps and answers after to maximize your potential.,
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MECHANICS1 DEVELOPMENT TUTORIALS
TUTORIAL 5
1. A mass of 120 kg is suspended from a cord attached to two light inelastic ropes
which form angles of 30° and 45° with the horizontal. Calculate the tension in
each rope.
ANS: - The construction of the sketch has to be done before.
With base line A-A: ∑ F = 0
T1 sin 75° = 11772 sin 45°
T1 = 861.8 N
With base line B-B: ∑ F = 0
T2 sin 75° =11772 sin 60°
T2 = 10, 55 kN
2. A mass of 80 kg is suspended from a cord attached to two light inelastic ropes
with lengths of 3 m and 4 m respectively and their remaining ends are fixed 5 m
apart to the same horizontal beam. Calculate the tension in each rope.
ANS: - The construction of the sketch has to be done
before.
1
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C:\WINDOWS\hinhem.scr
Calculate the inside angles using cosine rule.
a2 = b2 + c2 – 2bcCos A
52 =32 + 42 – 2(3) (4) Cos A
A = 90°
Use sine rule to find other angles.
(Sin 90°)/5 = (sin B)/3
B = 36,87°
Use sine rule to find other angles.
(Sin 36,87)/3 = (sin C)/4
C = 53,13°
With a base line C-C: ∑ F = 0
2
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3
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