E MCH 212 Lecture 9: EMCH 212 Lecture 9

Which of the following statements is true regarding potential energy?

1. It is due to the motion of an object

2. It is due to the rotational motion of a particle around a fixed path

3. It is due to the position of a particle from a fixed reference

4. None of these

the position of the 4 kg collar C on the smooth rod AB is held at r=0.72 m and L=0.3 m , determine the constant angular velocity (Theta) at which the mechanism is rotating about the vertical axis. The spring with k= 219 N/m has an unstretched length of 0.4 m. Neglect the mass of the rod and the size of the collar.

Angular Velocity (Theta) (in rad/s)

Answer

What is the amount of force required to maintain the motion of a body at a constant speed?