Recent content by mansari

(Part A) Yes, and her acceleration is directed DOWNWARDS. (Part B) This will be equal to her weight = 80(9.8) = 784N. (Part C) v^2 = 784/0.25 = 56m/s. (Part D) Yes, and her acceleration is directed UPWARDS. (Part E) F = 60 ( 56 ) = 3360 N. (Part F) Applying the equation F=Kv^2, the...

Ff=0. This shows a very important point. When you are not told that an object is slipping or on the verge of slipping, then the friction force is determined using Newton's laws of motion in conjunction with the observed motion and the other forces on the object.