What is the molar heat capacity of sodium chloride if it takes 1807.2 J to raise the temperature of 6 moles of NaCl by 6.0°C?

The answer is orbit around nucleus

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.