calculations please

A. Manual Centripetal Force Apparatus DATA TABLE 1 Purpose: To determine period of revolution for computation of centripetal force. Trial 1 458.5gg Trial 2 Trial 3 Mass of bob Number of revolutions 25 25 25 Radius of circular path 16cm 14.02 Average time per revolution Total time ( 13 86 13.31 OFA BIGAT ATAG Average speed of bob (v) Time/revolution ( Computed value of centripetal force Computation of centripetal force Direct measurement of (attach additional sheet) centripetal force 9. 32 N Percent difference and in bouge Jestave DATA TABLE 2 Purpose: To observe the effect of varying mass. Trial 1 Trial 2 Trial 3 Mass of bob 558.5g Number of revolutions 25 25 25 Radius of circular path 160m Total time ( 17.85 17.35 17.18 Average time per revolution Time/revolution ( ) Average speed of bob (v) Computed value of centripetal force Computation of centripetal force Direct measurement of (attach additional sheet) centripetal force 7.36N Percent difference (continued)