Help creating a function file

Question

Steven 2012-3-17

0
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https://ww2.mathworks.cn/matlabcentral/answers/32580-help-creating-a-function-file

回答： Steve Miller 2022-12-21

For this problem I need to create a function file that computes distance x and use my function to plot x versus W.

Here is the problem:

Figure P20 shows a mass-spring model of the type used to design packaging systems and vehicle suspensions, for example. ('of course I am aware you cannot see this figure').The springs exert a force that is proportional to their compression, and the proportionality constant is the spring constant 'k'. The two side springs provide additional resistance if the weight 'W' is gently placed, it moves through a distance 'x' before coming to rest. From statics, the weight force must balance the spring forces at this new position. Thus

W=(k1)*x [ if x < d ]

W=(k1)*x + 2(k2)*(x-d) [ if x >= d ]

These relations can be used to generate the plot of x versus W.

a) Create a function file that computes the distance x, using the input parameters W, k1, k2, and d. Test your function for the following two cases, using the values k1 = 10^4 N/m; k2 = 1.5 x 10^4 N/m; d = 0.1 m.

b) Use your function to plot x versus W for 0 <= W <= 3000 N for the values of k1,k2,and d given in part a.

PLEASE HELP!

Thank you..