Question

A ball is attached to a string. A boy hits the ball with a baseball bat. Which of the following data is required to calculate the time required for the ball to return back to the player?

• A. Th e mass and weight of the ball
• B. The mass and acceleration due to gravity
• C. The vertical distance the ball drops and the weight of the ball
• D. The length of the string attached to the ball and the acceleration due to gravity
• E. The mass of the ball and the initial distance between the ball and the player

Answer 1

The correct option is D The length of the string attached to the ball and the acceleration due to gravity

When boy hits the ball , it will do SHM and the time required for the ball to return to the player is the time period of this SHM, which is given by ,

$T=2\pi \sqrt{\frac{l}{g}}$ ,

where $l=$ length of string and $g=$ acceleration due to gravity ,

both will be required to calculate the time.