**Question:** In a circus stuntman rides a motorbike in a circular track of radius 𝑅 in the vertical plane. The minimum speed at highest point of track will be

(A) \sqrt{2gR}

(B) 2𝑔R

(C) \sqrt{3gR}

(D) \sqrt{gR}

**Answer:** option (D)

**Solution:**

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**Question:** In a circus stuntman rides a motorbike in a circular track of radius 𝑅 in the vertical plane. The minimum speed at highest point of track will be

(A) \sqrt{2gR}

(B) 2𝑔R

(C) \sqrt{3gR}

(D) \sqrt{gR}

**Answer:** option (D)

**Solution:**