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

  _____    __   __   _    _      ___     __   _      ___      _____   
 / ____||  \ \\/ // | \  / ||   / _ \\  | || | ||   / _ \\   |__  //  
/ //---`'   \ ` //  |  \/  ||  | / \ || | '--' ||  / //\ \\    / //   
\ \\___      | ||   | .  . ||  | \_/ || | .--. || |  ___  ||  / //__  
 \_____||    |_||   |_|\/|_||   \___//  |_|| |_|| |_||  |_|| /_____|| 
  `----`     `-`'   `-`  `-`    `---`   `-`  `-`  `-`   `-`  `-----`  
                                                                      
 __   __  
 \ \\/ // 
  \ ` //  
   | ||   
   |_||   
   `-`'