The 450-kg ram of a pile driver falls 1.4 m from rest and strikes the top of a 240-kg pile embedded 0.9 m in the ground. Upon impact the ram is seen to move with the pile with no noticeable rebound. Determine the velocity v of the pile and ram imme- diately after impact. Can you justify using the principle of conservation of momentum even though the weights act during the impact?

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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The 450-kg ram of a pile driver falls 1.4 m from
rest and strikes the top of a 240-kg pile embedded
0.9 m in the ground. Upon impact the ram is seen
to move with the pile with no noticeable rebound.
Determine the velocity v of the pile and ram imme-
diately after impact. Can you justify using the
principle of conservation of momentum even though
the weights act during the impact?
[ Ans: v = 3.42 m/s
14 m
09m
Transcribed Image Text:The 450-kg ram of a pile driver falls 1.4 m from rest and strikes the top of a 240-kg pile embedded 0.9 m in the ground. Upon impact the ram is seen to move with the pile with no noticeable rebound. Determine the velocity v of the pile and ram imme- diately after impact. Can you justify using the principle of conservation of momentum even though the weights act during the impact? [ Ans: v = 3.42 m/s 14 m 09m
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