As shown, a worker pushes a load of 500 N onto a platform with a force of 180 N by using an inclined plank. The 180N force is parallel to the inclined plank. The plank is 3 m long and the platform is 1 m above the ground.
a. Find the potential energy gained by the load.
b. Find the work done by the worker.
c. Find the energy wasted during this process.
d. Hence, calculate the frictional force along the plank.
Answers: 1
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The temperature at a point (x, y) is t(x, y), measured in degrees celsius. a bug crawls so that its position after t seconds is given by x = 6 + t , y = 8 + 1 3 t, where x and y are measured in centimeters. the temperature function satisfies tx(3, 9) = 5 and ty(3, 9) = 4. how fast is the temperature rising on the bug's path after 3 seconds? (round your answer to two decimal places.)
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As shown, a worker pushes a load of 500 N onto a platform with a force of 180 N by using an inclined...
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