Here we can use momentum conservation as in this type of collision there is no external force on it
now here we can say
now here we can say
now by coefficient of restitution
for elastic collision we know that e = 1
now by solving the two equation
also we know that
so final speed of the nail is 6.875 m/s
Answer:
radius comes out to be 3 m
height of the cylinder comes out to be 3m
Explanation:
given
volume of cylinder = 27π m³
π r² h = 27π
r² h = 27.............(1)
surface area of cylinder open at the top
S = 2πrh + π r²
for least amount of material requirement.
hence radius comes out to be 3 m
for height put the value in the equation 1
so, height of the cylinder comes out to be 3m