The initial speed of the bullet
Answer to Problem 13.149P
The initial speed of the bullet is
Explanation of Solution
Given information:
Weight of the bullet,
Weight of
Coefficient of friction between the blocks and the plane is
General impulse-momentum principal,
Calculation:
Consider the motion of a block under friction,
Applying,
Since, friction force,
Applying
Applying
Consider block
Impulse −momentum diagram,
Apply equation (1) considering the motion of
Apply equation (2) considering the motion of
Applying general impulse-momentum principal,
Since,
Consider block
Impulse −momentum diagram,
Apply equation (1) considering the motion of
Apply equation (2) considering the motion of
Applying general impulse-momentum principal,
From equation (3),
Conclusion:
Thus, the initial speed of the bullet is
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Chapter 13 Solutions
Vector Mechanics For Engineers