By now, you should be comfortable with problem solving in problems dealing with apparent weight. If not, go back through all the example problems given in this lesson. Before you move on, make sure you understand all the concepts as well. Answer the questions below to test your conceptual understanding.
A 25 kg box sits still on a table. What is the normal force?
- 0 N
- 122.6 N
- 245.3 N
- 490.5 N
In this situation, the normal force would equal the weight force: W = mg.
In this situation, the normal force would equal the weight force: W = mg.
In this situation, the normal force would equal the weight force: W = mg.
In this situation, the normal force would equal the weight force: W = mg.
A ball is falling with an acceleration just shy of the acceleration of gravity. The acceleration is -8.90 m/s2. What is the difference between the actual weight and the apparent weight?
- the actual weight is larger than the apparent weight
- the actual weight is the same as the apparent weight
- the actual weight is smaller than the apparent weight
- there is not enough information to answer
The acceleration is negative, so the net force must be pointing down.
The acceleration is negative, so the net force must be pointing down
The acceleration is negative, so the net force must be pointing down
The acceleration is negative, so the net force must be pointing down
A skydiver is slowing down going down. Which direction is the acceleration?
- up
- down
- n/a- the acceleration is zero
- there is not enough information given to decide
An object slowing down going down must have a positive (up) acceleration.
An object slowing down going down must have a positive (up) acceleration.
An object slowing down going down must have a positive (up) acceleration.
An object slowing down going down must have a positive (up) acceleration.
What is weightlessness?
- when an object has no weight
- when an object has no normal force applied to it
- when an object has more actual weight than normal force
- when an object has more normal force than actual weight
You feel weightless when there is no surface or other force pushing opposite the weight force.
You feel weightless when there is no surface or other force pushing opposite the weight force.
You feel weightless when there is no surface or other force pushing opposite the weight force.
You feel weightless when there is no surface or other force pushing opposite the weight force.
Summary
Questions answered correctly:
Questions answered incorrectly:
