Maurice Tutor

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Expertise:
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Algebra,Applied Sciences,Biology,Calculus,Chemistry,Economics,English,Essay writing,Geography,Geology,Health & Medical,Physics,Science Hide all
Teaching Since: May 2017
Last Sign in: 408 Weeks Ago, 3 Days Ago
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Education

  • MCS,PHD
    Argosy University/ Phoniex University/
    Nov-2005 - Oct-2011

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  • Professor
    Phoniex University
    Oct-2001 - Nov-2016

Category > Management Posted 07 Jul 2017 My Price 10.00

operation the jack hammer

15–11. During operation the jack hammer strikes the concrete surface with a force which is indicated in the graph. To achieve this the 2-kg spike S is fired into the surface at 90 m>s. Determine the speed of the spike just after rebounding.

15–14. A tankcar has a mass of 20 Mg and is freely rolling to the right with a speed of 0.75 m> s. If it strikes the barrier, determine the horizontal impulse needed to stop the car if the spring in the bumper B has a stiffness (a) k S 8 (bumper is rigid), and (b) k = 15 kN> m.

 

F (kN)

 

1500

 

v = 0.75 m/s

 

0

0 0.1

 

 

 

 

 

 

0.4

 

Prob. 15–11

 

 

 

 

 

t (ms)

 

 

Prob. 15–14

Answers

Maurice Tutor
(5)
Status NEW Posted 07 Jul 2017 11:07 AM My Price 10.00

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