Forces in Balance Flashcards
(27 cards)
Contact forces examples
- Friction
- Air resistance (contact with air)
- Tension (pulling force being exerted)
- Reaction force
Non-contact forces examples
- Gravitational force
- Magnetic force
- Electrostatic force
Scalars
Only have magnitude (measured with a number)
Scalars examples
- Speed
- Distance
- Mass
- Temperature
- Time
Vectors
Has both magnitude and direction
Vectors examples
- Velocity
- Displacement
- Acceleration
- Force
- Momentum
resultant force
The overall force on a point or object
what does it mean by an object being at equilibrium
The resultant force is 0 because the forces are balanced
work done
when a force moves an object through a distance, energy is transferred and work is done on the object
elastic deformation
when an object can go back to its original shape after the force has been removed
inelastic deformation
when an object doesnt return back to its original shape after the force has been removed
extension
increase in length of a spring when its stretched
spring constant
how many N it would take to stretch the object by 1M
hooke’s law
the extension of a stretched spring is directly proportional to the force applied
limit of proportionality
object wont go back to its original shape (inelastically deformed)
higher spring constant
more firm and harder to stretch
what is spring constant measured in
n/m
J = ???Nm
1
elastic potential energy
energy transferred to an object as its stretched
moments
the turning effect of a force
moment measurement
Nm
levers
transmit the turning effect of a force
what happens if the input and output forces are at opposite end of the pivot?
act in different directions
