Recent content by grrer

sorry maybe i just don't understand what this question is asking but: How long does it take a crew to accelerate a block to the walking speed?

wow, yes i was over complicating it, thank you so much!

:S and then?

what forumula do I use? I'm confused what to do with the velocity

thanks! Assume that a comfortable walking speed for an average person is 1.33m/s Assume that the workers can only walk at half this speed while they were pulling a block, but that they would walk at this speed on the trip from the pyramid back to the quarry. At these speeds, how many blocks can...

and is the second one just fk?

Homework Statement The Egyptian's sled system had a rather high coefficient of static friction (0.7) but a much lower coefficient of kinetic friction (0.3) How much force is required to start a block moving on level ground? We know the block is 1980 kg and after that: Assume that one...