The ## {H_2^+}## molecule consists of two hydrogen nuclei and a single electron.What kind of molecular bond do you think holds this molecular together? Explain.
Problem Statement: What's your result of ##X_A##? I find mine is different from the standard answer.
Relevant Equations: My answer for $$X_A =5 kN$$
Problem Statement: What's your result of ##X_A##? I find mine is different from the standard answer.
Relevant Equations: My answer for $$X_A...
You mean $$X_A = X_ B$$ It may not equals to 0.
We just can't calculate it from the information already given.
Is that what you are trying to say here?
Because point B has a pulley on the ground, ##N_B## is vertical.
Choose A be centroid
$$\sum m_A (F)=0, ~2a N_B + m=0$$
$$\Rightarrow N_B=\frac {-m} {2a},$$ So it's downward.
X-axis, $$X_A=0$$
Y-axis, $$Y_A=0 $$ $$N_B + Y_A=0$$
$$\Rightarrow Y_A= -N_B = \frac {m} {2a}$$ So ##Y_A## it's upward.
Why should it be like that?
There are 2 situations
Full load, W=200 kN. let ##Q_{min}## stands for the minimum weight requirement of Q.
$$\sum m_B(F)=0, (6+2)Q_{min} + 2P - (12-2) W=0, N_A=0$$
No load, W=0 kN. let ##Q_{max}## stands for the maximum weight requirement of Q
$$\sum m_A(F)=0...
Here is diagram for Tower Crane.
The Rack weight P=700kN, and the maximum load capacity for this crane is W=200kN. The long beam length is 12 metres, and the balance object weighs Q. The short beam length is 6 metres. What is the weight of Q to keep the crane's balance at all situation?
1. The illustrated structure is affected by a known couple, and try to figure out the restraining reaction force of the hinge A and hinge E.
We should analyse ECD instead. Since arm CD is a two force members, so N(C) in in the direction where CD connects by these two points. The distance from...