A hammer of mass 1 kg with initial velocity 10m/sec hit a surface in comes to rest in 0.2 sec. find the average reistance force acting on the hammer and impulse
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Mass of the hammer=1kg
Initial velocity(u)=6ms
1
Final velocity(v)=0ms
1
Tie taken(t)=0.1sec
(i)
impluse=m(v−u)=1×(0−6)
=>−6ms
1
(ii)
a retarding force that stops a hammer
i.e.,
f=
time
impluse
=
0.1
−6
=>60N
(iii)
retarding of the hammer
i.e.,
a=
m
f
=
1
60
=
Mass of the hammer=1kg
Initial velocity(u)=6ms
1
Final velocity(v)=0ms
1
Tie taken(t)=0.1sec
(i)
impluse=m(v−u)=1×(0−6)
=>−6ms
1
(ii)
a retarding force that stops a hammer
i.e.,
f=
time
impluse
=
0.1
−6
=>60N
(iii)
retarding of the hammer
i.e.,
a=
m
f
=
1
60
=
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