fw: Newtons3RDLaw

Newton's Third Law

PIRA classification 1H

1H10. Action and Reaction

1H10.10 push me pull me carts Two people stand on roller carts and both pull on a rope or push with a long stick. 1H10.10 push me pull me carts Two people stand on roller carts and both pull on a rope. A long stick may be substituted to allow pushing. 1H10.10 rope and carts People on two identical roller carts pull each other with a long rope. 1H10.11 rope and carts All the things you can do standing and running on carts with and without ropes. 1H10.12 rope and carts Stand on a cart holding a rope passing over a pulley to a weight slightly less than static friction, then pull the rope. 1H10.15 reaction gliders Burn a string holding a compressed spring between two air gliders. 1H10.20 Newton's sailboat Propel an air glider with a battery powered fan, then attach a sail directly in front of the fan. 1H10.20 Newton's sailboat A battery powered fan and sail can be mounted on a air track cart. Three cases are demonstrated: 1) sail attached, fan not attached; 2) both sail and fan attached; 3) fan attached, no sail. 1H10.20 fan car with sail A sail is placed in front of a battery powered fan on a cart. 1H10.21 Newton's sailboat A balloon provides an air source on one cart, a sail is mounted on another cart. Hold each stationary in turn. 1H10.25 helicopter rotor A symmetric propeller deflects air down, causing upward lift. 1H10.30 cannon car A small brass cannon mounted on one car fires a bullet into a wood block on another of equal mass. A string tying the carts together will result in no motion.

1H11. Recoil

1H11.01 recoil 1H11.10 floor cart and medicine ball Stand on a roller cart and throw a medicine ball or styrofoam ball. 1H11.10 floor cart and medicine ball Throw a heavy medicine ball while standing on a roller cart. 1H11.11 stool on a conveyor Throw a ball while on a stool mounted on a conveyor. 1H11.20 tennis ball cannon A cannon on wheels shoots a tennis ball. 1H11.30 liquid nitrogen cannon A liquid nitrogen powered cannon on wheels shoots heavy and light stoppers. 1H11.30 liquid nitrogen cannon A cork is shot out of a liquid nitrogen cannon. 1H11.30 liquid nitrogen cannon CO2 provides the pressure to blow a cork out of a cannon on wheels. 1H11.30 liquid air gun Liquid air in a bent test tube shoots a cork when the escape valve is closed. 1H11.40 ballistic gun Shoot a spring loaded bifilar suspended gun. Measure the muzzle velocity by range and the recoil by adjacent scale. 1H11.41 open cannon A hole in the back of a rail mounted gun allows the gasses to escape or not to show the difference on recoil. 1H11.44 bent gun A spring loaded gun firing a steel ball has a barrel bent 90 degrees to show recoil opposite the exit direction instead of the firing direction.

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