Problem 5: Textbook Problem 2.6/ Page 40; Take x2 > X1;

2.6 In the mechanical system shown in Figure P2.6, the spring forces are zero when

x₁ = x₂ = x3 = 0. Let the base be stationary so that x3 (t) = 0 for all values of

t. Draw free-body diagrams and write a pair of coupled differential equations that

govern the motion when the only input is fa(t).

X3(1)

K₁

voo

B₁

M3

M₁

XXX

FIGURE P2.6

x2

- fa(t)

000

K₂

M₂

B₂