Center of MassHardBloom L3
Question
Seven identical birds are flying south together at constant velocity. A hunter shoots one of them, which immediately dies and falls to the ground. The other six continue flying south at the original velocity. After the one bird has hit the ground, the centre of mass of all seven birds
Options
A.continues south at the original speed, but is now located some distance behind the flying birds
B.continues south, but at 6/7 the original velocity
C.continues south, but at 1/7 the original velocity
D.stops with the dead bird
Solution
Sol. $(v_{cm})_{f} = \frac{m.O + ({m.v}) \times 6}{7m} = \frac{6}{7}v$
$(v_{cm})_{i} = \frac{({mv}) \times 7}{7m} = v$
∴ $(v_{cm})_{f} = \frac{6}{7}(v_{cm})_{i}$
Create a free account to view solution
View Solution FreeMore Center of Mass Questions
Two particles of equal mass m are projected form the ground with speed v1 and v2 at angle θ1 and θ2 as shown i...The area of F-t curve is A, where ′F′ is the force on one mass due to the other. If one of the colliding bod...A uniform rod of mass m and length 2l lies on smooth horizontal surface. A particle of same mass m is connected to strin...Two particles approach each other with different velocities. After collision, one of the particles has a momentum in the...A thin uniform wire is bent to form the two equal sides AB and AC of triangle ABC, where AB = AC = 5 cm. The third side ...