Adock worker loading crates on a ship finds that a 27 kg crate, initially at rest on a horizontal surface, requires a 80 n horizontal force to set it in motion. however, after the crate is in motion, a horizontal force of 56 n is required to keep it moving with a constant speed. the acceleration of gravity is 9.8 m/s 2 . find the coefficient of static friction between crate and floor.

0.302

Explanation:

Given

mass of crate m=27 kg

Force required to set crate in motion is 80 N

Once the crate is set  in motion 56 N is require to move it with constant velocity

i.e. 80 N is the amount of force needed to just overcome static friction and 56 is the kinetic friction force

thus  

where is the coefficient of static friction and N is Normal reaction

dang that balls went far

47r7eudueueueurudueu37373