An electric heater draws a current of 5A and its element has a resistance of 50 ohm. If the heater is switched on for 5minutes, calculate the energy released by the bulb.

Ithink the answer is fusion 

I'm having some difficulty seeing the diagram clearly.but the question says there's a net inward force on the object.so we know right away,  from newton's 2nd law of motion, thatthat baby is accelerating.  it doesn't even matter which way thenet force is pointing.  if there's any net force, then either theobject's speed or else its direction must be changing.