A Ball of Mass M₁,connected to Another Mass M₂ by a String,is

question 54

Multiple Choice

A ball of mass m₁,connected to another mass m₂ by a string,is whirled at a constant speed in a horizontal circle of radius R equal to 0.800m.If the mass m₂ = 5.00 kg,the kinetic energy of the ball is

• A)0.981 J
• B)2.45 J
• C)4.90 J
• D)19.6 J
• E)39.2 J