Question

mass One can measure the speed v of a bullet by using a ballistic pendulum. Let the mass of the bullet m=15g. The of the wooden pendulum is M=7 kg. The bullet is shot, and the system made of Wood + Bullet start swinging with an initial velocity V upward, as much as h=5 cm. a) (15 p) Via using the law of energy conservation and the law of linear momentum conservation, find the initial velocity of the bullet, in terms of M, m, h and the Earth’s acceleration g. 2 b) (10 p) Calculate v. Take g=10m/s .

Answer 1

Bullet atrest (MAM ou М. AV m=159 -0.01 Sky Markg Just Before the collision . just after the Collision using momentum conservation mu= m+ M)V vs mu MtM momentarily at using energy conservation 1 M. tho) v² = (Mthigh rest h-sem-0.05m V²= 2 gh = v= √2.gn PX1Oxo.os mais v-Im's putting this value in ea 1x7.015 kgmls I mis- 0.015kg) (0:015 kg+7kg) U= 0.015 kg >u- 467.67 mis a Initial velocity of bullet us 467.67 m/s b v=inls. Scanned with CamScanner