Question

You are given a figure below. The bar moves from a position denoted by theta and stops at the horizontal position shown, That figure has 6 variables, mass, k, L1, L2, theta and unstretched length of the spring.. You will need to assign values to the 5 of the 6 variables and solve for the remaining variable. Make sure that your work is on engineering paper.

L2 Li

Answer 1

Given: In shown figure The bar moves from a position denoted. by and stops of the horizontal position. That figure has variables, mass (m), K, L,L2, o unstreched length of the spring I will need to assign values to the 5 of the 6 variable and solve for the ren remaining variable 6 Ond L2 relleu Assume mass 4 ng the rod AB Em AB -L = Le ។ Length of the rod Length of the spring inihal positica coith horizontal = 0 stiffeness of the spring =k torque about hinged point B. (The),=0 how balonce T, XL mgx TI mg 2 for spring t = ka mg K 21 mg 2K extension an spring length = a = total length - extended length Unstreched length of spring a L2 mg Variable no. 6 2K