What causes the mechanical advantage of the inclined plane to be less than that of the lever?

The motor m applies a time-varying force of f (200 t) n, where t is in seconds. box b with mass 200 kg starts from rest, and the coefficients of kinetic and static friction are 0.2 and us 0.3 the acceleration due to gravity is g 9.8 m/s2 b 300 a) find the time ' when the box starts to move. b) calculate the speed of the crate at 3 s c) calculate the power delivered by the motor at t 3 s

The diagram shows a series of volcanic island and a hot spot determine the direction of movement of the tectonic plate that for the island

By what factor does the drag force on a car increase as it goes from 65 to 110 km/h?