hello can you please show how you go the numbers and hwo you got the answer so i

Question

hello can you please show how you go the numbers and hwo you got the answer so i can figure out what to do on these types of problems? i am totally lost. thank you. A mass m1 = 5.8 kg rests on a frictionless table and connected by a massless string over a massless pulley to another mass m2 = 3.5 kg which hangs freely from the string. When released, the hanging mass falls a distance d = 0.78 m. How much work is done by gravity on the two block system in J and how much work is done by the normal force on m1?

Explanation / Answer

a)Work done by normal force on N1=0J as N1 is perpendicular to the displacement b) W done by gravity is change in kinetic energy=3.5*9.8*.78=26.754J

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