Forces
External Force
Forces Acting on Structures
Internal Forces
100
A push or pull that tends to cause an object to change its movement or shape
What is a force
100
All structures on earth must be able to resist this force pulling on them
What is the force of gravity
100
Is an external force, has two types
What is load
100
Forces that act within a structure
What is an internal structure
200
3 things that affect the force of a structure
What is magnitude, direction, and location
200
A force that is applied on a structure by something else
What is an external force
200
The weight of the structure and the non-moving load it supports, also known as dead load
What is static load
200
A force that acts to stretch or pull apart something
What is Tension
300
The standard unit for measuring force
What is a Newton
300
The amount of matter in an object
What is mass
300
An external force that moves or changes with time, also known as live load
What is dynamic load
300
A force that acts on an object or pushes parts together within an object
What is compression
400
10 newton is needed to hold up a mass of
1 kg
400
The imaginary point in an object where the downward force of gravity acts
What is centre of gravity
400
This type of bridge is
What is a truss bridge
400
A force which push parts which are in contact with each other in opposite directions
What is shear
500
The difference between mass and weight
Mass: Amount of matter
Weight: Amount of gravitational pull on an object
500
A balanced arrangement of mass that occurs on opposite sides of a line or plane, or around a centre of axis
What is symmetry
500
This type of bridge is
What is a beam bridge
500
When different kinds of internal forces act on a structure at the same time
What is complementary forces