Question

A stationary object is released from a point P a distance 3R from the centre of the moon which has radius R and mass M. Which one of the following expressions gives the speed of the object on hitting the moon ?

• A. \((\frac{2GM}{3R})^{\frac{1}{2}}\)
• B. \((\frac{4GM}{3R})^{\frac{1}{2}}\)
• C. \((\frac{2GM}{R})^{\frac{1}{2}}\)
• D. \((\frac{GM}{R})^{\frac{1}{2}}\)

Answer 1

The Correct Option is B

The correct option is (B) : \((\frac{4GM}{3R})^{\frac{1}{2}}\).