A 0.40 kgmass attached to the end of a string swings in a ve…
A 0.40 kgmass attached to the end of a string swings in a vertical circle having a radius of 1.8 m. At an instant when the string makes an angle 40.°below the horizontal, the speed of the mass is 5.0 ms. Whay is the magnitude of the tension in the string at this instant?