If you had a block-cylinder system and the radius of the cylinder was cut in half and the mass of the block was increased by x2, would the acceleration be greater, smaller, or stay the same? NEED HELP ASAP

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Arunner is training for an upcoming marathon by running around a 100-m-diameter circular track at constant speed. let a coordinate system have its origin at the center of the circle with the x-axis pointing east and the y-axis north. the runner starts at (x, y) = (50 m, 0 m) and runs 2.5 times around the track in a clockwise direction.