help walk me through it please. teacher has a thick accent and doesn\'t explain
ID: 2237701 • Letter: H
Question
help walk me through it please. teacher has a thick accent and doesn't explain well. A winch is used to drag a 390N crate up a ramp at a constant speed of 30.0cm/s by means of a rope that pulls parallel to the surface of the ramp. The rope slopes upward at 35.0^circ above the horizontal, and the coefficient of kinetic friction between the ramp and the crate is 0.340. What is the tension in the rope? If the rope were suddenly to snap, what would be the acceleration of the crate immediately after the rope broke?Explanation / Answer
T - 0.34*390*cos(35 degrees) - 390*sin(35 degrees) = 0 so, T = 332.3 N <--------------answer
T = ma
so, a = T/m = 332.3*9.8/390 = 8.35 m/s2 <-------answer
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