Im having problems with two questions, the first is linear acceleration, A 6.00-kg cylindrical reel with a radius of 0.600 m and a frictionless axle, starts from rest and speeds up uniformly as a 4.00-kg bucket falls into a well, making a light rope unwind from the reel. The bucket starts from rest and falls for 4.00 s. Find the linear acceleration of the falling bucket. The formula I am using which I am not sure if it is correct is tmg/mt(1/2)M where t is time, m is the mass of the bucket, g is gravity, and M is the mass of the reel. attempting to solve this problem I always end up with 3.26, somewhere I think I have my math or variables mixed up and cant come to the right conclusion the second problem I am having trouble with is moments of interia, Four objects are held in position at the corners of a rectangle by light rods with M1=2.70kg and located at (-2m,3m), M2=1.70kg and located at (2m,3m), M3=4.10kg and located at (2m,-3m) and M4=2.10kg and located at (-2m,-3m). M stands for the masses of the objects. Find the moments of intertia along the x axis and the y axis respectively. I found the moment of intertia of the system at the origin of (0m,0m) by adding the x and y coordinates and squaring them to get 9 for the distance of each mass and then multiplying that by each mass and adding each individual mass together to get the answer of 137.8kg/m^2 however that formula doesnt seem to work when I try to find the x axis or y axis moment of intertia by multiplying the radius of each mass by its respective mass then adding all 4 masses together. please help.