Does anyone know how to calculate the centre of percussion for a door? I've found 1 webpage which kind of explains it but it isn't great. Thanks to anyone who helps!
http://orca.phys.uvic.ca/~tatum/classmechs/class8.pdf (page 4)
http://orca.phys.uvic.ca/~tatum/classmechs/class8.pdf (page 4)