Question
A hammer of mass m falls from rest off of a roof and drops a height H onto your head.
a) Assuming that the tool is in actual contact with your head for a time △t before it stops and slides off, what is the algebraic expression for the average force it exerts on your skull while stopping?
a) Assuming that the tool is in actual contact with your head for a time △t before it stops and slides off, what is the algebraic expression for the average force it exerts on your skull while stopping?
Answers
Anonymous
mgH=mv²/2
v=sqrt(2gH)
F=Δp/Δt= Δ(mv)/ Δt=m Δ(v)/Δt=
=m[sqrt(2gH)-0]/Δt= m[sqrt(2gH)]/ Δt
v=sqrt(2gH)
F=Δp/Δt= Δ(mv)/ Δt=m Δ(v)/Δt=
=m[sqrt(2gH)-0]/Δt= m[sqrt(2gH)]/ Δt