A 74-kg tree surgeon rides a cherry picker lift to reach the upper branches of a tree. What force does the lift exert on the surgeon when its (a) at rest; (b) moving upward at a steady 2.4 m/s; (c) moving downward at a steady 2.4 m/s; (d) accelerating upward at 1.7 m/s2 ; (e) accelerating downward at 1.7 m/s2 ?

Simple Harmonic Motion Simple Harmonic Motion ● Period: time required for one cycle of periodic motion ● Frequency: number of oscillations per unit time ○ f= T ● A spring exerts a restoring force that is proportional to the displacement from equilibrium: ○ F=-kx ● A mass on a spring has a displacement as a function...