Floating and Sinking Flashcards
1
Q
Why do ocean liners float when they weigh thousands of tonnes?
A
- Because they displace huge amounts of water
2
Q
What must be true for an object to float?
A
Must displace its own weight of the surrounding fluid.
Upthrust = weight
3
Q
Rules if an object sinks?
A
Upthrust < Weight
4
Q
What will happen to the object if it is DENSER than the fluid?
A
- Upthrust will be less than the weight and it will sink
5
Q
What will happen to the object if it is less dense than the fluid?
A
Upthrust is greater than the weight so the object will float
