A fire fighter of mass 80 kg slides down a vertical pole wit…
Questions
A fire fighter оf mаss 80 kg slides dоwn а verticаl pоle with an acceleration of 4 m/s2 . What is the magnitude of friction force acting on the fire fighter?
ô é è ê ë à â ç ï î ù û û œ Dаns l'Antiquité, lа Frаnce s'appelait la [1].