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2. An object of mass m= 2.1 x 10³ kg follows a curved path with a constant radius r= 1.2 km. If the average
angular acceleration is 3 8-2, find the net radial force Fr.
3. Let Po be the reference pressure at the top of a liquid with density p= 0.9885 kg m-3 on Earth. What is the
difference in pressure at 2.5 m below the top of the liquid?

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