Questions
A small ball is pushed from a height h along a smooth hemispherical bowl. With what speed should the ball be pushed so that it just reaches the top of the opposite end of the bowl? The height of the top of the bowl is R.
detailed solution
Correct option is D
From the principle of conservation of energy, we have12mv2+mgh=0+mgRwhich gives v=2g(R−h). Hence the correct choice is (d).Similar Questions
If the water falls from a dam into a turbine wheel 19.6 m below, then the velocity of water (in m/s) at the turbine is
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