Laws of Motion ...

A simple pendulum, composed of a bob of mass $$m$$ connected to the end of a massless rod, executes simple harmonic motion as it swings through small angles of oscillation.The maximum angular displacement with the vertical is denoted by $${ \theta  }_{ max }$$. Frictional effects and variation of acceleration due to gravity are negligible.  
Find out the correct statement?

A physics student is performing a experiment in which she twirls  rubber stopper at the end of a string around in a circle at nearly constant speed and tries to determine its acceleration. Which of the following single changes would enables her to most nearly double the acceleration of the rubber stopper?

Which of the following statements is NOT true?

Which of the following physical quantities has the same units as that of impulse?

A ball of mass $$m$$ is attached with the string of length $$R$$, rotating in a circular motion, with instantaneous velocity $$v$$ and centripetal acceleration $$a$$.
Calculate the centripetal acceleration of the ball if its mass is doubled?

A man in a minivan rounds a circular turn at a constant speed. Which of the following would cause the minivan to experience less acceleration ?

A simple pendulum, composed of a bob of mass $$m$$ connected to the end of a massless rod, executes simple harmonic motion as it swings through small angles of oscillation.The maximum angular displacement with the vertical is denoted by $${ \theta  }_{ max }$$. Frictional effects and variation of acceleration due to gravity are negligible.  
Which one of the following would enable you to calculate the length of the pendulum?

Which of the following balls is easier to catch even though all of them are moving with the same velocity?

To reduce the momentum of a given body to half its original value, its velocity must be ___________.

The maximum safe speed for a vehicle taking a turn on a curved banked road, does not depend upon