A box with mass of 2 kg is tied vertically to the ceiling. A bullet with the mass 10 g shot and get into inside of the box,thus, the box together with the bullet go up with h height. Ther bullet's kinetic energy which is lost during the crashing is 603 Joule. Find h.
2007-01-15 00:49:07 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Physics
The bullet hits the box horizontally.The box does not rotate on its axis.It just move up because of the bullet.
2007-01-15 01:00:48 · update #1
m1 = m(box) = 2 kg
m2 = m(bullet) = 0.01 kg
g = 9.81 m/s²
Gain in Potential Energy of (box + bullet) = Loss in Knetic Energy of bullet
(m1 + m2)*g*h = 603
h = 603/(2.01*9.81) = 30.59~30.6 m
2007-01-15 01:01:15 · answer #1 · answered by Som™ 6 · 0⤊ 0⤋
What is the direction of the bullet? Horizontal or from the bottom. Does it hit the box straight on or toward a side thus causing the box to rotate around its axis? Until you answer these crucial questions there cannot be any answer.
2007-01-15 08:57:42 · answer #2 · answered by catarthur 6 · 0⤊ 1⤋