The 10-lb block is originally at rest on the smooth surface. It is acted upon by a radial...

The 10-lb block is originally at rest on the smooth surface. It is acted upon by a radial force of 2 lb and a horizontal force of 7 lb, always directed at 30° from the tangent to the path as shown. Determine the time required to break the cord, which requires a tension T = 30 lb. What is the speed of the block when this occurs? Neglect the size of the block for the calculation.