3. Using the expression you derived in part (2) calculate the acceleration of the cart and the hook. Assume the mass of the hook is 30 grams, the mass of the cart is 1.05 kg, and that g =9.8m/82 4. Using the expression you derived in part (2) calculate the acceleration. This time, assume the mass of the hook is 60 grams, the mass of the cart is 1.02 kg, and that g = 9.8m/ s2 . How does this acceleration compare to the value you just calculated above, is it greater than, less than or equal to the acceleration you calculated in part (3)? Explain your reasoning