I have a small doubt. It may feel silly, but please reply..
Suppose I have a pendulum and it is impacting onto a structure. The mass of pendulum is 'm' and the intiial velocity is 'v'. The condition is that the KE at the time of impact should be 'E'. E= 0.5*m*v2 .
Now i change the mass of the pendulum to m1 correspondingly velocity should be changed to v1 so that E1=E.
Now i need to compare the force transmitted to the structure. F = ma.