Question

Please draw any diagrams that would be helpful to understanding what I am suppose to be doing.

1. Mathematically prove that if mechanical conservation of energy applies, work W= -(Deta)E_p.

2. A machine applied a force F(x) = 7x² - 6x [N] to a robot to move the robot from x = 1 m to x = 4 m. Determine the work done by the machine.

3. How much work is done against gravity by Prof. if he holds a 10 kg mass on Earth's surface 1 meter above the ground, and walks 5 meters North, then 5 meters East on a horizontal platform.

4. An object flies straight up at 10 m/s at y = 0 m, and after a time interval, is still moving at 10 m/s at y = 10. What is the net work done on this object during the time interval?

5. (Picture) Estimate the work done if the following dark force (dark curve) was applied to an object moved from x = 4 m to x = 1 m.

ey-om Estimate the work done if the following force (dark curve) was applied to an object moved from x=4mto x = 1 m. 5. F(x) [N] 0 1 2 3 4 5 6 7 x[mJ

Answer 1

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