The design for a new cementless hip implant is to be studied using aninstrumented implant and a fixed simulated femur. Assuming the punch appliesan average force of 2 kN over a time of 2 ms to the 200 g implant determine (a)the velocity of the implant immediately after impact, (b) the average resistanceof the implant to penetration if the implant moves 1 mm before coming to rest.

Given, punch applies an average force of 2 KN for 2ms. Mass of implant = 200 g.

Answered: The design for a new cementless hip…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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A 498-gram ball is traveling horizontally at 11.1 m/s to the left when it is suddenly struck horizontally by a bat, causing it to reverse direction and initially travel at 8.8 m/s to the right. If the bat produced an average force of 1.3 kN on the ball, for how long (in milliseconds) was it in contact with the ball?
33. A 200kg box is laid down to a rough flat surface whose coefficient of friction is 0.39. Determine the horizontal force needed to accelerate the box at the surface at the rate of 2.5m/s?. a. 1.2610KN b. 1.1463KN c. 1.2652KN d. 1.2052KN
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Question 9– answer all parts A heavy goods vehicle of total mass 4.8 tonnes descends a hill with a gradient of 8 degrees from the horizontal. During this motion, the vehicle experiences a rolling resistance to its motion of 880 N. Whilst travelling at a velocity of 72 km/h, its brakes are applied, and the truck is brought uniformly to rest in a distance of 140 m. During this period of constant deceleration, it may be assumed that the rolling resistance remains constant at 88ON, this being in addition to the retarding force applied by the brakes. Calculate for the vehicle whilst it is slowing down: a) The vertical height through which it descends. b) Its decrease in potential energy. c) Its initial velocity in m/s. Its decrease in kinetic energy. -------------------- ---------------- -------------- ---------
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