Answer:
The value of Modulus of elasticity E = 85.33 ×
![\frac{lbm}{in^{2} }](https://tex.z-dn.net/?f=%5Cfrac%7Blbm%7D%7Bin%5E%7B2%7D%20%7D)
Beam deflection is = 0.15 in
Explanation:
Given data
width = 5 in
Length = 60 in
Mass of the person = 125 lb
Load = 125 × 32 = 4000![\frac{ft lbm}{s^{2} }](https://tex.z-dn.net/?f=%5Cfrac%7Bft%20lbm%7D%7Bs%5E%7B2%7D%20%7D)
We know that moment of inertia is given as
![I = \frac{bt^{3} }{12}](https://tex.z-dn.net/?f=I%20%3D%20%5Cfrac%7Bbt%5E%7B3%7D%20%7D%7B12%7D)
![I = \frac{5 (1.5^{3} )}{12}](https://tex.z-dn.net/?f=I%20%3D%20%5Cfrac%7B5%20%281.5%5E%7B3%7D%20%29%7D%7B12%7D)
I = 1.40625 ![in^{4}](https://tex.z-dn.net/?f=in%5E%7B4%7D)
Deflection = 0.15 in
We know that deflection of the beam in this case is given as
Δ = ![\frac{PL^{3} }{48EI}](https://tex.z-dn.net/?f=%5Cfrac%7BPL%5E%7B3%7D%20%7D%7B48EI%7D)
![0.15 = \frac{4000(60)^{3} }{48 E (1.40625)}](https://tex.z-dn.net/?f=0.15%20%3D%20%5Cfrac%7B4000%2860%29%5E%7B3%7D%20%7D%7B48%20E%20%281.40625%29%7D)
E = 85.33 ×
![\frac{lbm}{in^{2} }](https://tex.z-dn.net/?f=%5Cfrac%7Blbm%7D%7Bin%5E%7B2%7D%20%7D)
This is the value of Modulus of elasticity.
Beam deflection is = 0.15 in
Answer:
The final velocity of the rocket is 450 m/s.
Explanation:
Given;
initial velocity of the rocket, u = 0
constant upward acceleration of the rocket, a = 18 m/s²
time of motion of the rocket, t = 25 s
The final velocity of the rocket is calculated with the following kinematic equation;
v = u + at
where;
v is the final velocity of the rocket after 25 s
Substitute the given values in the equation above;
v = 0 + 18 x 25
v = 450 m/s
Therefore, the final velocity of the rocket is 450 m/s.
Answer: Last week, Nate and I counted all the inventory.
Explanation: all other choices are passive voices
this sentence follows a clear subject + verb + object construct that's why it is an active voice. In fact, sentences constructed in the active voice add impact to your writing. but on the other hand With passive voice, the subject is acted upon by the verb.
Ape x