A machine has to complete of work

PHYSICS · Subjective · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

A machine has to complete

3000\,\text{J}

of work. For the first

2000\,\text{J}

it operates at

100\,\text{W}

. For the remaining work it operates at

200\,\text{W}

. Determine the total time required to finish the entire job.