Unit 1 APPLICATION OF FORCES AND TRANSFER OF ENERGY Flashcards
SI unit for Force:
Newton (N)
Apparatus to measure Force
- Spring Balance
- Dynamometer
In what ways are Friction advantageous?
- Improved grip
- Prevents slipping
- Writing
- Slowing down or stopping objects
- Moving on muddy or wet surfaces
- Door stoppers
Types of Forces:
- Magnetic Force
- Elastic Force
- Frictional Force
Definition of Elastic Force:
- Elastic Force is a contact force that comes into play when an object is stretched or compressed from its original shape.
Definition of Gravitational Force:
- As long as objects possess mass, they can exert an attractive force on each other.
Can exert force when Pushed or Pulled (from its original form)
Elastic Force
Definition of Gravitational Field Strength:
It tells us the amount of gravitational force it exerts on every 1 kg of mass.
SI unit of time
second (s)
Relationship between mass of an object and its gravitational field strength
The greater the mass of the object, the stronger its gravitational field strength
SI unit of mass
kilogram (kg)
SI unit of electric current
ampere (A)
SI unit of time
meter (m)
How is gravitational field strength expressed?
N/kg (denoted as “g”)
SI unit of temperature
kelvin (K)