Resultant forces and work done Flashcards
1
Q
What is a resultant force?
A
Its the overall force on a point or object
2
Q
What happens when a resultant force moves an object?
A
When a force moves an object through a distance,energy is transferred and work is done on the object.
3
Q
example of when a resultant force moves an object
A
When you push smth along a rough surface, work is done against frictional forces,As object moves,energy is transferred to objects kinetic energy store but some is transferred to objects thermal energy store causing the object to heat up.
4
Q
How can you work out how much work has been done?
A
W(J) = FORCE (N) x Distance ( m)
5
Q
convert joules into Nm
A
1J = 1nm
