a i got 7.35J and b i got 50J. c i wasn't sure and d relys on c so basically c is the main thing that needs to be answered

Emmett 2. [I] MARKS! An exercise machine at a gym has a 5kg mass attached to one end of a horizontal spring with spring constant SON/m. The other end of the spring is anchored to a wall. A woman working out on the machine pushes her arms forward, a cable stretches the spring by dragging the weight along a track with a coefficient of kinetic friction of 0.3. The cable tension is IOON. (a) What is the thermal energy created when the mass has moved 0.5m if the cable tension is IOON? (2 Marks ) HINT: Use 55m = fkr (b) What is the external work done by the cable's tension when the mass has moved 0.5m? (2 Marks) (c) What is the speed at which she moves the mass 0.5m if the cable tension is IOON'? (4 Marks) U56 KEO 'l' \"0 + Wext = KEl + U1 + Et; (d) What is the womans power output at the moment when the mass has moved 0.5m if the cable tension is lOON