Question

The alarm at a fire station rings and an 86-kg fireman, starting from rest, slides down a pole to the floor below (a distance of 4.0 m). just before landing, his speed is 1.4 m/s. what is the magnitude of the kinetic frictional force exerted on the fireman as he slides down the pole?

Answer 1

Vf^2=Vi^2+2ad you know Vf, Vi, mg, and distance d. solve for frictionforceResponding to an alarm, a 100 kg, a fireman slides down a pole to the ground floor, 3.1 m below. The fireman starts at rest and lands with a speed of 3.8 m/s. Find the average force exerted on the fireman by the pole. Find the average force exerted on the fireman when the landing speed is 1.9 m/s.