1. HOMEWORK 01A
Kinetic energy, potential energy, virtual work
Problem 1:
Problem 2:
Problem 3:

2. Problem 1: m
x(t)
f(t)
f(t) is the input, x(t) is the generalized coordinate as shown in Figure 1. Write the expressions of kinetic energy, potential energy, and virtual work for the system. c k
m,R c k m
Figure 1
Click for answer.

3. Problem 2:
Moment T(t) is the input, θ(t) is the generalized coordinates as shown in Figure 2. For small-angle motion, write the expressions of kinetic enegy, potential energy, and virtual work for the system. m
T(t) c k 2k
Click for answer.
Figure 2

4. Problem 3:
For the system shown in Figure 3, xA(t) and θ(t) are the generalized coordinates, f(t) and x1(t) are the inputs, for θ <<1. Write the expressions of kinetic enegy, potential energy, and virtual work for the system.
Click for answer.
Figure 3
First stage of answer δW