Low current and low voltage mosfet switch (eg from a PWM arduino output)...for a heavier need motor.
The motor rpm speed alters according to the pulse width applied to the mosfet gate.
Go in to the pulse source settings at the bottom left of the above schematic and alter the WIDTH only.
Watch the motor rpm change.
Any standard N mosfet should work in reality eg IRFZ34N, but a Logic Level type is advisable, eg FQP30N06L.
(I have not spent time setting the rds here...it's not necessary for this demo).
