All Questions
6
questions
1
vote
0
answers
62
views
How does this toilet lid work?
After further reflection after closing the lid on my toilet, I noticed it exhibited a behaviour that I can't explain. When you let the lid fall, it falls at a constant speed regardless of its angle. ...
- 123
0
votes
0
answers
56
views
Why did Galileo use a ramp instead of a rope/pulley in his famous experiment?
If I understand correctly, one can derive an equivalent relation between distance the body falls and time, by using a rope/pulley system too.
Conceptually it may be easier and perhaps more natural. ...
- 193
-1
votes
3
answers
166
views
Would a car consume less fuel if Earth's gravitational force was weaker?
Consider any other variables unchanged (the surface of the road, how the car is driven, wind, etc.), only consider a weaker gravity. How will that affect fuel consumption?
- 113
1
vote
1
answer
375
views
Angular Acceleration of a Pendulum
I am trying to work out the mathematics behind the design of an old mechanical brake tester. The device sits in the passenger foot well of a vehicle and tests the brake efficiency. The device is ...
- 11
2
votes
2
answers
412
views
Will the gravitational pull of air affect the falling rate of an object?
After looking at this question:
Don't heavier objects actually fall faster because they exert their own gravity?
A thought occurred to me that due to the increased gravitational pull of the ...
- 277
15
votes
5
answers
38k
views
How fast would someone have to run to travel vertically up a wall?
I am currently doing a physics project on the effects of so-called 'super-speed'. I was wondering how fast you would have to run to vertically travel up a wall? That is, to negate the force of gravity....
- 191