A carpenter exerts a force of magnitude 1.5 N at right angles to the surface of a nail of mass 3 gram to drive it into the wood. If wood offers a resistive force of 0.6 N and the time of interaction of hammer and the nail 0.01 s, the depth through which the nail penetrates is?
Net force acting on wood=1.5-0.6=0.9N
Mass of nail=3gm=0.003 kg
Using F=ma
a=F/m=0.9 / 0.003=300
Now given that,
t=0.01 sec
Using v=u+at
0=u-300 x 0.01
u=3 m/s
Again,