During a test run

PHYSICS · Multi-part · AP · Physics 1: Algebra-based · Work Energy and Power · Work Energy and Power

Problem

During a test run, a small crane operates according to the following schedule: •

40\,\text{s}

500\,\text{W}

•

20\,\text{s}

0\,\text{W}

(idle) •

30\,\text{s}

900\,\text{W}

(i) Determine the total work done by the crane during the test run. (ii) Compute the average power output for the entire

90\,\text{s}

interval. (iii) Find the constant power that would be required to perform the same total work in

60\,\text{s}