Engineering Mechanics - Equilibrium of a Particle - Discussion
Discussion Forum : Equilibrium of a Particle - General Questions (Q.No. 1)
1.
The joint O of a space frame is subjected to four forces. Strut OA lies in the x-y plane and strut OB lies in the y-z plane. Determine the force acting in each if the three struts required for equilibrium of the joint. Set 
= 45°.
Discussion:
18 comments Page 1 of 2.
Aditya said:
1 decade ago
Sum of force in z direction
-500 + p sin30 = 0
p=1000
sum of force in x direction
300 - r sin45 =0
r = 424.26
sum of force in y direction
p cos30 - r cos45 = f
f = 566.025
-500 + p sin30 = 0
p=1000
sum of force in x direction
300 - r sin45 =0
r = 424.26
sum of force in y direction
p cos30 - r cos45 = f
f = 566.025
Sanatan Singh said:
1 decade ago
Why to convert the unit from lb to newton (N) when the answer required is in lb ?
Simple question just based on laws of static equilibrium.
Ex=0
Ey=0
Ez=0
Simple question just based on laws of static equilibrium.
Ex=0
Ey=0
Ez=0
K.VISHNU said:
1 decade ago
300=R*sin45
R=424
500=P*sin30
P=1000
And
F=P*cos30-R*cos45
F=1000*Sqrt3/2-424/sqrt2
F=566
R=424
500=P*sin30
P=1000
And
F=P*cos30-R*cos45
F=1000*Sqrt3/2-424/sqrt2
F=566
Bikash said:
1 decade ago
Sum of forces in a direction =0
taking
E Fx=0;
E Fy=0;
E Fz=0;
Solve it simple.
taking
E Fx=0;
E Fy=0;
E Fz=0;
Solve it simple.
James turner said:
1 decade ago
How did you come up with the value of p ?
Narendra said:
4 years ago
How to solve it? Please explain.
(1)
Ajinkya said:
1 decade ago
Good calculation aditya. Thanks.
Vasu said:
1 decade ago
Put sin30 value and calculate.
Patience said:
7 years ago
Thank you for the explanation.
Afiq said:
1 decade ago
How to convert lb to newton?
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