(TCO 1) Name one disadvantage of fixed-configuration switches over modular switches. a. Ease of management b. Port security b. F
1 answer:
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Answer:
The required size of column is length = 15 ft and diameter = 4.04 inches
Explanation:
Given;
Length of the column, L = 15 ft
Applied load, P = 10 kips = 10 × 10³ Psi
End condition as fixed at the base and free at the top
thus,
Effective length of the column, = 2L = 30 ft = 360 inches
now, for aluminium
Elastic modulus, E = 1.0 × 10⁷ Psi
Now, from the Euler's critical load, we have
where, I is the moment of inertia
on substituting the respective values, we get
or
I = 13.13 in⁴
also for circular cross-section
I =
thus,
13.13 =
or
d = 4.04 inches
The required size of column is length = 15 ft and diameter = 4.04 inches
Answer:
a)
b)
c) Impulse = 0 kg m/s²
d) percent decrease in kinetic energy = 47.85%
Explanation:
Let be the initial velocity of rod A
Let be the initial velocity of rod B
Let be the final velocity of rod A
Let be the final velocity of rod B
Using the principle of conservation of momentum:
............(1)
Coefficient of restitution,
........................(2)
Substitute equation (2) into equation (1)
..............(3)
Solving for in equation (3) above:
....................(4)
From equation (2):
......(5)
Substitute equation (5) into (1)
..........(6)
Solving for in equation (6) above:
.........(7)
b)
Rod A is said to be at rest after the impact,
Substitute these parameters into equation (7)
To calculate the final velocity, , substitute the given parameters into (4):
c) Impulse,
I = 0
d) %
%
%