4. A 500 N couch is being pulled at angle of 60 above the horizontal (think of grabbing the couch and lifting up while also pulling backwards). That static and kinetic coefficients of friction between the couch and the carpet on the ground are 0.6 and 0.35, respectively. a. Will a pulling force of 250 N be able to start moving the couch if it is at rest on the carpet?b. Assuming the couch is already sliding on the carpet, what will the acceleration ( magnitude and direction) of the couch be if the same puling force of 250 N is applied? .5. A 70 kg performer stands on two stilts making an inverted V-shape, each at an angle of 200 from the vertical axis. What are the normal forces exerted be each stilt on the performer?3