Show that the trajectory of a body in projectile is a parabola and deduce expressions for a. Time of flight. b. Maximum height c. Range
Answers
Answer:
Let a body is projected with speed um/s inclined θ with horizontal line.
Then, vertical component of u, u
y
=ucosθ
Horizontal component of u
x
=usinθ
acceleration on horizontal, ax=0
acceleration on vertical, ay=−g
Now, use formula
X=u
x
t
X=ucosθ.t
t=X/ucosθ--------------------------(1)
Again, y=u
y
t+1/2a
y
t
2
y=usinθt−1/2gt
2
put equation (1) here,
y=usinθ×x/ucosθ−1/2gt
2
×x
2
/u
2
cos
2
θ
=tanθx−1/2gx
2
/u
2
cos
2
y=tanθ.x−1/2gx
2
/u
2
cos
2
θ
this equation is similar to standard equation of parabola y=ax
2
+bx+c her, a,band c are constant
So, A projectile motion is parabolic motion.
solution
Answered By
toppr
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Explanation:
show that the path of projectile is parabolic deduce expression of range and flight time