Please enable JavaScript.
Coggle requires JavaScript to display documents.
Chapter 6 : Work and Energy, CHEE ZI QING A20SC0043 - Coggle Diagram
Chapter 6 : Work and Energy
Work Done by a Constant Force
Work done,W =Fdcos(theta), d=distance travelled
SI Unit of work= Joule(J) / Nm
there is no work done when force perpendicular to distance
Work is the change in the energy of a system due to external forces
without undergo displacement, no work done
negative when force and work dond are opposite direction
Scalar Product of Two Vectors
W = F(dot)d
Work Done by a Varying Force
Work done by a spring force, W = 1/2 kx^2
F = -kx (hookes law)
Kinetic Energy and the Work-Energy Principle
kinetic energy, k =1/2 mv^2
Work done= change of kinetic energy
net work done positive = kinetic energy increase
net work done negative = kinetic energy decrease
Energy defines as ability to do work
CHEE ZI QING A20SC0043