The uniform disk has a mass m and radius R. A cord of negligible mass is wrapped around the periphery of the disk and attached to a block having a mss 2 m. What is the block's acceleration if it is released?

The power source in a certain welding setup generates 3500w that is transferred to the low carbon steel work with a heat transfer factor of 0.85. the melting factor in the operation is 0.45. a continuous fillet weld is to be made with a cross-sectional area of 23 mm2 determine the travel speed at which the welding can be accomplished.