Question: The device shown in the figure consists
The device shown in the figure consists of a prismatic rigid pointer ABC supported by a uniform translational spring of stiffness k = 950 N/m. The spring is positioned at distance b = 165 mm from the pinned end A of the pointer. The device is adjusted so that, when there is no load P, the pointer reads zero on the angular scale. (a) If the load P = 11 N, at what distance x should the load be placed so that the pointer will read θ = 25° on the scale (see figure part a)? (b) Repeat part (a) if a rotational spring kr = kb2 is added at A (see figure part b). (c) Let x = 7b/8. What is (N) Pmax if u cannot exceed 28? Include spring kr in your analysis. (d) Now, if the weight of the pointer ABC is known to be Wp = 3 N and the weight of the spring is Ws = 2.75 N, what initial angular position (i.e., θ in degrees) of the pointer will result in a zero reading on the angular scale once the pointer is released from rest? Assume P = kr = 0. (e) If the pointer is rotated to a vertical position (see figure part c), find the required load P applied at mid-height of the pointer that will result in a pointer reading of θ = 2.5° on the scale. Consider the weight of the pointer Wp in your analysis. 
Transcribed Image Text:
A B x- B C b/2 В W. 36/4 k, (с)
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