Question :
A frictional track ABCDE ends in a circular loop of radius R, body slides down the track from point A which is at a height h of 5 cm. Maximum value of R for the body to successfully complete the loop is:
1. 5 cm
2. 10/3 cm
3. 2 cm
4. 15/4 cm
Answer :
3 - 2 cm
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