Momentum and CollisionHard
Question
A cannon of mass 5 m (including a shell of mass m )is at rest on a smooth horizontal ground, fires the shell with its barrel at an angles θ with the horizontal at a velocity u relative to cannon :
Options
A.
B.
C.
D.
Solution
COLM :
Along horizontal
0 = m(u cos - v) - 4mv ⇒ v =
∴ velocity of shell along horizontal w.r.t ground
= u cos θ -
(u cos θ)
Time flight T =
∴ x = horizontal displacement
=
Along horizontal
0 = m(u cos - v) - 4mv ⇒ v =
∴ velocity of shell along horizontal w.r.t ground
= u cos θ -
(u cos θ)Time flight T =
∴ x = horizontal displacement
=
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