Describir: The effect of handle height and cart load on the initial hand forces in cart pushing and pulling /

  ______     ___     _    _     ______  __    __     ___              
 /_   _//   / _ \\  | |  | ||  /_   _// \ \\ / //   / _ \\    ____    
   | ||    / //\ \\ | |/\| ||   -| ||-   \ \/ //   | / \ ||  |    \\  
  _| ||   |  ___  |||  /\  ||   _| ||_    \  //    | \_/ ||  | [] ||  
 /__//    |_||  |_|||_// \_||  /_____//    \//      \___//   |  __//  
 `--`     `-`   `-` `-`   `-`  `-----`      `       `---`    |_|`-`   
                                                             `-`      
  _____   
 |  ___|| 
 | ||__   
 | ||__   
 |_____|| 
 `-----`