Science Buddies: "Ask an Expert"

Consider two off set cams and between these two cams there is one follower.From the contact point of cam and follower, we continuously decrease redii of cam up to one point.We give minor decrease in redii. we decrease redii at 10:1 ratio. It means if the length of periphery from one point to other point is 10 cm than decrease of redii from one point to other point is 1 cm. For left side cam we decrease redii from right to left. I mean we decrease redii of left side cam in antclockwise direction. For right side cam we decrease redii from left to right. we decrease redii of right side cam in clockwise direction.Now we apply some vertical load or weight from follower to two cams.Tengential componant of this load helps the cams to rotate. Left side cam rotate in clockwise direction and right side cam rotate in anti clockwise direction. Because of minor decrease in redii of cams ,follower come little bit down in vertical direction. But the same time the load or weight helps cams to rotate on more length of periphery at some angle. We cam increase efficiency of rotating shaft. We can lift mass using less energy. To see fogure pz visit my web page http://energyefficiency.zoomshare.com

Was there a question in your post? I didn't see one.

When you are lifting a weight, what forces are involved? How does weight relate to mass? How far are you lifting something? What is its mass?

How is the work (or energy required) to lift something related to the distance, mass, and forces?

If there are no energy losses (work expended to overcome other forces), then the work, or energy, required to lift a given weight a given distance against a given gravitational force is fixed (no matter how long you take or how you do it).

Hi Jigar,

Check out this video of a man moving a barn using pebbles and also he showed a theory of how man built stonehenge using mechanic principles.
Maybe it will give you some insight:
http://www.youtube.com/watch?v=lRRDzFROMx0

Have fun !