I recall from my high school days illustrations of slaves pulling these large stone blocks over the sand on log rollers.
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It can be done with 2 ton stones up a wetted 20 degreee incline. But fails with 20 tons or more as the weight crushes the logs.
redfreedom, the pyramids were not built by slaves - we have excavations from a village nearby that housed the builders.
In short, these were native Egyptian farmers in their “off-season”.
The Nile floods for a few months every year (or did before the Aswan dam) and deposits silt. During that time, the farmers have nothing to do. In Old Kingdom Egypt (until 1800 BC), the majority of people were farmers and they really and truly believed that building this tomb to their god king was fundamental for their live then and in the thereafter.
They were “paid” in the foodgrains prepared over the previous season of farming.
As to log rollers - we have traces of their quarries - they quite often just pulled the blocks on the sand