Auniform thin rod of length l and mass m is suspended from one end such that it can rotate freely (about an axis at the rod's end). friction is negligible. the rod is displaced from the vertical by an angle and released from rest. what is the angular velocity and linear velocity of the free end at the lowest point of the swing?

How is coal extracted from mountaintop removal mines? a. dynamite is used to create underground tunnels where miners go to extract the coal. b. dynamite is used to break apart rocks and then draglines are used to remove the broken rock and reach the coal. c. coal in mountaintops is extracted by digging strips in the landscape to reach the coal. d. placer deposits in mountain river bottoms are removed by

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What do you think car designers do if the damage caused by a crash test is too severe?