What is mechanism behind moving toys

Replies

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  Jeffrey Arulraj

  The Newton's law "Every action has an equal and opposite reaction" holds good
  
  When you coil the spring there is a lot of tension on it the moment you release it the force already exerted is reacted upon and the toy moves forward
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  rahul69

  When the toy is keyed, the energy is stored inside the spring (theoretically (1/2)kx^2). This energy is released by rotating the tires and hence moving the toy.
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  zaveri

  the key is attached to a torsional spring, which is disturbed on keying, when the key is released, it starts unwinding, and this is what rotates the axle shaft of a toy car.
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  Kaustubh Katdare

  I'm not sure if there's a special name to the energy stored in a compressed spring; but I'd call it potential energy which gets converted into Kinetic Energy through the movement of the wheels. But is that the real question being discussed here?
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  zaveri

  The_Big_K

  I'm not sure if there's a special name to the energy stored in a compressed spring; but I'd call it potential energy which gets converted into Kinetic Energy through the movement of the wheels. But is that the real question being discussed here?

  what you have said is right.
  
  springs and flywheels come under a class of machine elements called ENERGY STORAGE DEVICES.
  
  when a spring is disturbed , or loaded in anyway, work has to be done to do this. the amount of work done to this is what is stored as energy in the spring, and this energy is released, whenever the load is removed from the spring.
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  rajshekhar k h

  actually i am doing project on this...........
  please suggest me how exactly the link has been done to convert energy stored in coil to kinetic energy
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  zaveri

  the key shaft is placed inside the coil spring such that their axes coincide, and that the outer surface of the shaft tightly hugs the internal surfaces of the spring.
  
  the ends of the spring, are rigidly fixed.
  
  on one end of the key shaft, is attached the key, and the other end is present the wheel.
  
  the key is to provide leverage while twisting(keying).
  
  when you have twisted the key in any one direction, say clockwise and release it, the spring unwinds and rotates the key shaft in the opposite direction (ccw).
  
  but for this it is important that the ends of the spring are tightly clamped.