Answer to Question #163547 in Mechanics | Relativity for Golardha

Question

Two springs on a bar are connected to earth as shown opposite: D1 and D2 are the Hook's constants of the two springs. The beam is mounted massless and rotatable at point E. a) By which lengths XI and .T2 do the springs expand with the spring constants Dl 500N / m, D2 300N / m, if the force F 100N acts as shown? b) At what angle does the bar incline to the horizontal?

I could not add picture..... Sorry

Answer 1

a)

$$x_1=\frac{100}{500}=0.2\ m\\x_2=\frac{100}{300}=0.33\ m$$

b)

$$\theta=\arctan{\frac{0.2}{0.33}}=31\degree$$