Thanks guys. I think that's solved it.
I found that
A 10,000 kg rock, with 10 m drop, is about 1 MJ, which is about 0.28 kWh
And, 1 ton dynamite/tnt is approx 4.184 gigajoules = 1162 kWh
So there is no real possibility to create an impact on the ground by dropping a large boulder, equivalent...
Thanks guys. To clarify my question, what I am after is, what mass of rock I would need to drop from say 20 meters, that would send an equivalent seismic wave into the ground to match a 1 ton dynamite blast.
Hope that's clearer. The physics units are pretty complex for a novice, so I'll avoid...
Can someone help me to calculate the approximate impact on the Earth (as in a mining explosion), of 1 ton of dynamite.
And also the equivalent impact of say a 1 ton rock dropped from 10 meters.
Trying to estimate this for writing purposes, I very roughly got:
Impact of 1 ton of dynamite, Work...