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Concept explainers
A bowler projects an 8-in.-diameter ball weighing 12 lb along an alley with a forward velocity v0 of 15 ft/s and a backspin
![Check Mark](/static/check-mark.png)
(a)
Find time
Answer to Problem 16.71P
Time
Explanation of Solution
Given information:
Mass
Radius
Initial velocity
Friction coefficient
Angular velocity
Concept used:
Following formula is used:
1. Sum of horizontal forces,
2. Sum of moments about mass center,
Calculation:
Friction force,
Sum of horizontal forces,
Sum of moments about mass center,
Velocity equation,
Angular velocity equation,
From above both equation,
Conclusion:
Thus we get,
Time
![Check Mark](/static/check-mark.png)
(b)
Find speed of ball at that time.
Answer to Problem 16.71P
Speed
Explanation of Solution
Given information:
Mass
Radius
Initial velocity
Friction coefficient
Angular velocity
Concept used:
Following formula is used:
1. Sum of horizontal forces,
2. Sum of moments about mass center,
Calculation:
Friction force,
Sum of horizontal forces,
Sum of moments about mass center,
Velocity equation,
Angular velocity equation,
From above both equation,
Speed
Conclusion:
Thus we get,
Speed
![Check Mark](/static/check-mark.png)
(c)
Find distance travelled by ball.
Answer to Problem 16.71P
Distance travelled
Explanation of Solution
Given information:
Mass
Radius
Initial velocity
Friction coefficient
Angular velocity
Concept used:
Following formula is used:
1. Sum of horizontal forces,
2. Sum of moments about mass center,
Calculation:
Friction force,
Sum of horizontal forces,
Sum of moments about mass center,
Velocity equation,
Angular velocity equation,
From above both equation,
Distance travelled,
Conclusion:
Thus we get,
Distance travelled
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Chapter 16 Solutions
Vector Mechanics For Engineers
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