A500 kg piano is being lowered into position by a crane while two people steady it with ropes pulling to the sides. bobs rope pulls to the left, 15 degrees below horizontal, with 410 n of tension. ellen's rope pulls toward the right, 26 degrees below horizontal.

part a
what tension must ellen maintain in her rope to keep the piano de ending at a steady speed?

partb
what is the tension is the vertical main cable supporting the piano?

Aperson gives a shopping cart an initial push along a horizontal floor to get it moving, and then lets go. the cart travels forward along the floor, gradually slowing as it moves. consider the horizontal force(s) on the cart while it is moving forward and slowing. which of the following statements is correct? (a) both a forward and a backward force are acting on the cart, but the forward force is larger. (b) only a forward force is acting which diminishes with time. (c) both a forward and a backward force are acting on the cart, but the backward force is larger. (d) only a backward force is acting, no forward force.