The radius of the path of an object in uniform circular motion is halved. The centripetal acceleration needed if its speed
remains the same is

half as great
four times as great as before
twice as great as before
the same as before

Choose the correct general statement concerning the total potential and kinetic energy at any point along the arc of swing. the total energy at any point along the arc of swing of the pendulum is always less than 12 joules. the total energy at any point along the arc of swing of the pendulum is always more than 12 joules. the total energy at any point along the arc of swing of the pendulum is always equal to 12 joules. not enough information to determine