Which Particle Reaches the Other End of the Hemisphere First?

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SUMMARY

In the discussion regarding the motion of two particles released simultaneously from opposite ends of a diameter on a hemispherical surface, it is concluded that the particle traveling along the hemispherical surface reaches the other end first. This is due to the gradual increase in speed of the particle on the hemisphere, attributed to the forces acting along the surface. Despite the longer path, the conservation of energy principle ensures that the particle accelerates sufficiently to compensate for the distance, resulting in a faster arrival time compared to the particle moving along a wire with no tension.

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Two particles of same mass and size are released SIMULTANEOUSLY from one end of a diameter of a hemispherical surface, along a wire joining the diameter and along the hemispherical surface respectively..The hemispherical surface is frictionless AND WIRE HAS NO TENSION..Both have a horizontal velocity v.

WHICH REACHES THE OTHER END FIRST?
 
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The speed of the particle on the hemisphere gradually rises because of the force present along the hemisphere surface.And once it has reached the bottom most point its speed decreases gradually and becomes v again by conservation of energy principle.So even though the path of the body traveling along the hemisphere is more but the speed increase more than makes up for it.And hence particle going along the hemisphere reaches first.

I don't have any mathematical explanation.Srry.
 
what force along the " hemisphere"?
 

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