A uniform bar AB of weight W = 25 N is supported by two springs, as shown
Question:
(a) At what distance x from the left-hand spring (figure part a) should a load P = 18 N be placed in order to bring the bar to a horizontal position?
(b) If P is now removed, what new value of k1 is required so that the bar (figure part a) will hang in a horizontal position under weight W?
(c) If P is removed and k1 = 300 N/m, what distance b should spring k1 be moved to the right so that the bar (figure part a) will hang in a horizontal position under weight W?
(d) If the spring on the left is now replaced by two springs in series (k1 = 300N/m, k3) with overall natural length L1 = 250 mm (see figure part b), what value of k3 is required so that the bar will hang in a horizontal position under weight W?
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