If 120 n of force is applied to a crate to move it 15 m, how much work is done? 1,000 j 1,800 j 2,000 j 2,500 j

Aspring has a natural length of 8 m. if a 12-n force is required to keep it stretched to a length of 10 m, how much work w is required to stretch it from 8 m to 16 m? (round your answer to two decimal places.)