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A 25.0-g bullet strikes a 0.600-kg block attached to a fixed horizontal spring whose
Chapter 11, Problem 26P(choose chapter or problem)
Problem 26P
A 25.0-g bullet strikes a 0.600-kg block attached to a fixed horizontal spring whose spring stiffness constant is 7.70 × 103 N/m. The block is set into vibration with an amplitude of 21.5 cm. What was the speed of the bullet before impact if the bullet and block move together after impact?
Questions & Answers
QUESTION:
Problem 26P
A 25.0-g bullet strikes a 0.600-kg block attached to a fixed horizontal spring whose spring stiffness constant is 7.70 × 103 N/m. The block is set into vibration with an amplitude of 21.5 cm. What was the speed of the bullet before impact if the bullet and block move together after impact?
ANSWER:
Solution 26P
Step 1 of 2
We have to find the speed of the bullet before impact if the bullet and block move together after impact.
The initial speed of the bullet can be found using the law of conservation of momentum.
where,
mass of the bullet in kg
initial speed of the bullet
in m/s
Mass of the block = 0.6 kg
maximum speed of the
bullet and block after collision
in m/s
Thus,