Spin the object at any desired rpm and apply load, the resistance to to deceleration is measured as torque.
Can hp break a driveshaft ? No, torque is the twist force that is directly measureable .
Can hp be measured directly ? No, hp is a mythical mathmatic function.
Why do I say its mythical ?
When fulton designed and produced the steam engine , there became a need to (quantify ) the work that the powerplant could do.
At the time the best comparison was the powerplant they were hoping to replace,,,,,(the horse).
to compare, they developed a formula ( mythical as it may be ) to make a direct comparison.
Its nice to have big gaol, but to me, hp is a poster, of a cute chick.
Torque is what we harness to produce WORK.
Without torque there is no work as the spinning crank will stop quickly as there is no energy to maintain its velocity.
Note, I stated quickly,, any spinning objest has a quantity of inertia, stored inertai will be what is providing the resisitance to decellaeration if no torque is present..
2 cups of coffe
Gus
JMHO
And yes, as long as rpm rises faster than torque falls, the mythical hp fiqure will maintain or possiby e rise slightly before crumbling miserably.