Recent content by Gavinp

Sorry for delay, but no, however will google them after this reply, thanks for lead. My problem is this, I think I have a viable design for imparting a fair amount of velocity to the ball. It uses a dense coil of catapult elastic which is stretched using a geared crank. releasing the coil...

I am designing a tennis ball gun and am trying to work out the forces involved. It is essentially elastic powered but at this stage all I need to know at this stage is this: with the gun at a 20 degree incline what muzzle velocity would result in the ball traveling 50 metres?