Turning Forces Flashcards
What is the definition of a pivot?
The point at which something moves.
What does rotating mean?
A change of direction.
What are the effects of forces on objects?
Forces can make things start moving, stop, speed up, slow down, or even turn.
What do we call the force that causes something to turn?
A moment.
What factors determine the size of a moment?
- The size of the force applied, measured in newtons (N)
- The distance from the pivot point where the force is applied, measured in meters (m)
What is the formula for calculating a moment?
Moment = Force * Distance from Pivot.
If a force of 15 N is applied 2 meters from the pivot, what is the moment?
Moment = 30 Nm.
What are levers used for?
Levers are simple machines that use moments to make work easier.
How does the distance from the pivot affect the moment?
The farther you apply the force from the pivot, the larger the moment.
What must be true for a see-saw to be balanced?
The moments on both sides of the pivot must be equal.
If a child weighing 300 N sits 1 meter from the pivot, what must be true for balance?
Another child of equal weight must sit on the opposite side.
How does understanding moments help in real-world applications?
It helps predict and solve problems, like using a long wrench to loosen a bolt.
True or False: Moments and levers show how physics makes everyday tasks harder.
False.
Fill in the blank: A moment happens when a force is applied to an object that can _______.
[pivot or turn]
