Recent content by hats_06

so if Ff= Uk.N...Then since Uk = 0.3 and N = 76.sin 20 So Ff = 7.8, Hence W = 7.8 x 3.5 = 27.3? I tried that answer but it didnt work :S

Homework Statement Please help, I've been struggling with this question for so long! We haven't done internal energy so I am not sure even where to really begin? A 10.0 kg block is dragged over a rough, horizontal surface by a 76.0 N force acting at 20.0° above the horizontal. The block...