Cual es la utilidad
del calculo integral en economia

Avalue that describes how heavy an object is and is related to the force of gravity is

Apulley system is used to lift a 2,000 newton engine up a distance of 3 meters. the operator must apply a force of 250 newtons to the chain of the pulley system to lift the motor. to lift the engine 3 meters, the operator must pull a total of 30 meters of chain through the pulley system. what is the value of di?

This is for my 8th grade science class, i really don’t understand. can someone me? , lol.