An experiment is done to compare the initial speed of bullets fired from different handguns: a 9. 0 mm and a. 44 caliber. The guns are fired into a 10-kg pendulum bob of length l. Assume that the 9. 0-mm bullet has a mass of 6. 0 g and the. 44-caliber bullet has a mass of 12 g. If the 9. 0-mm bullet causes the pendulum to swing to a maximum angular displacement of 4. 3∘ and the. 44-caliber bullet causes a displacement of 10. 1∘ , find the ratio of the initial speed of the 9. 0-mm bullet to the speed of the. 44-caliber bullet, (v0)9. 0/(v0)44.