Solution Found!
Are the objects described here in static equilibrium,
Chapter 6, Problem 1CQ(choose chapter or problem)
Problem 1CQ
Are the objects described here in static equilibrium, dynamic equilibrium, or not in equilibrium at all? Explain.
a. A 200 pound barbell is held over your head.
b. A girder is lifted at constant speed by a crane.
c. A girder is being lowered into place. It is slowing down.
d. A jet plane has reached its cruising speed and altitude.
e. A box in the back of a truck doesn’t slide as the truck stops.
Questions & Answers
QUESTION:
Problem 1CQ
Are the objects described here in static equilibrium, dynamic equilibrium, or not in equilibrium at all? Explain.
a. A 200 pound barbell is held over your head.
b. A girder is lifted at constant speed by a crane.
c. A girder is being lowered into place. It is slowing down.
d. A jet plane has reached its cruising speed and altitude.
e. A box in the back of a truck doesn’t slide as the truck stops.
ANSWER:
Step 1 of 5
We need to find out the objects are in static equilibrium, dynamic equilibrium or not in equilibrium.
a) In this case the barbell held over the person's head is not accelerating and the velocity is zero so it will be in static equilibrium.