Moments, Stability And Pendulums Flashcards
What happens if the anti-clockwise moments do not equal the clockwise moments?
There will be a resultant moment and the object will turn
What are the features of the most stable objects?
Wide base and low centre of mass
When will an object begin to tip over?
When it’s centre of mass is moved beyond the edge of its base
How does moments cause an object to tip?
If the Line of action of the weight of the object lies outside the base there will be a resultant moment tipping the object
What is a simple pendulum made by?
Suspending a weight from a piece of string
Define time period?
The time taken for the pendulum to swing from one side to the other and back again
Why are pendulums perfect for keeping time in clocks?
The time period for each swing of a given pendulum is always the same
How can time period be calculated ?
1/ frequency
What does the time period for a pendulum depend on?
It’s length, the longer the pendulum the greater the time period
What is another use of pendulums?
Swings
Fairground rides that swing you back and forth
