Calculate the attraction between them, given the radius of the earth as 6.37 X 10 8 cm and its mean density as 5.53 X 10 3 kg/m 3, specific gravity of lead=11.5. if the lead spheres are replaced by brass spheres of the same radii, would the force of attraction be the same? 8. Adjust the angle and repeat for 80, 70, 60, and 50 degrees. Remember you need to do two trials for each. 9. Calculate the averages for Table 1. Table 1: Angle of Release of the Mass Angle of Release (Angle with the ground) Swings Per Minute Trial 1 Trial 2 Average (Swings Per Minute) 90 ° 80 ° 70 ° 60 ° 50 ° 10.

Vector Calculator. Enter values into Magnitude and Angle ... or X and Y. It will do conversions and sum up the vectors. Learn about Vectors and Dot Products.