I have a homework problem and i am not sure where tostart. If i could receive a

Question

I have a homework problem and i am not sure where tostart. If i could receive a step by step approach to thisproblem that would be great. A 50 g. ball is attacheed to a string that is fastened to theceiling. The string has length of 80 cm. The string isdisplaced 80 degrees from its vertical position and the ballis released from rest. A. What is the work done by tension force on the ballduring its motion? B. Find the speed of the ball as it passes through thelowest point during its motion. C. Find the tension in the string at the lowestpoint. I have a homework problem and i am not sure where tostart. If i could receive a step by step approach to thisproblem that would be great. A 50 g. ball is attacheed to a string that is fastened to theceiling. The string has length of 80 cm. The string isdisplaced 80 degrees from its vertical position and the ballis released from rest. A. What is the work done by tension force on the ballduring its motion? B. Find the speed of the ball as it passes through thelowest point during its motion. C. Find the tension in the string at the lowestpoint.

Explanation / Answer

as the tension force is always perpendicular to the displacementthe work done is 0J the change in potential energy is mgl(1-cos80)=0.5*m*v*v so v=calculate T=mg+m*v*v/l where l is 0.8m and v is the velocity at the lowest position

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