# That's our childhood

A boy is initially seated on the top of a hemispherical $$\color{blue}{ice}$$ mound of radius R as shown in the figure.

He begins to slide down the ice, with a negligible initial speed.At what height(in m) does the boy loose contact with the ice ?

Details :

• Radius of hemispherical mound is 13.8 m.
• Approximate the ice as being frictionless.
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