Concept explainers
The motion of a particle is defined by the relation
(a)
The positions at which velocity is zero.
Answer to Problem 11.8P
Time
Explanation of Solution
Given information:
The motion of the particle is given by the equation:
Where (x) in feet and (t) is in seconds.
We can obtain the velocity (v) at any time (t) by differentiating (x) with respect to (t),
Since,
The acceleration (a) can be obtained by differentiating again the above equation with respect to (t)
When velocity is zero, v=0
From equation (2),
Now, the position when t1=3.53s.
Now, the position when t1=1.131s:
Conclusion:
The two positions when velocity is zero x1=8.88 ft and x2=2.03ft.
(b)
The total distance traveled by the particle when, t = 0s to t=4s.
Answer to Problem 11.8P
Total distance travel by the particle is 8 ft.
Explanation of Solution
Given information:
The motion of the particle is given by the equation:
Where (x) in feet and (t) is in seconds.
We can obtain the velocity (v) at any time (t) by differentiating (x) with respect to (t),
Since,
The acceleration (a) can be obtained by differentiating again the above equation with respect to (t):
From equation (1), when t = 0s.
Again, from equation (1), when t=4s
Conclusion:
The total distance travel by the particle is 8 ft.
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Chapter 11 Solutions
Vector Mechanics for Engineers: Dynamics
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