Work, Energy, and Power
Which of the following statements best describes the concept of work in physics?
Which of the following is an example of a conservative force?
According to the work-energy theorem, what is equal to the net work done on an object?
A box is pushed up a ramp. In addition to gravity, friction also acts on the box. What must be considered when calculating the total work done on the box?
A constant force of 20 N is applied to a box, causing it to move 4 meters in the direction of the force. How much work is done on the box?
A force of 50 N is applied to a box at an angle of 60 degrees to the horizontal. If the box moves 10 meters horizontally, how much work is done by the force?
A force-displacement graph shows a constant force of 10 N acting on an object over a displacement of 5 meters. What is the work done?
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A force-displacement graph shows a force that increases linearly from 0 N to 20 N over a displacement of 4 meters. What is the work done?
A block is pushed along two different paths from point A to point B. Path 1 is a straight line, while Path 2 is curved. If the work done by gravity is the same for both paths, what can be concluded about gravity?
Three forces act on an object: = 20 N at 0 degrees, = 30 N at 90 degrees, and = 40 N at 180 degrees. If the object is displaced 5 meters along the x-axis, what is the total work done on the object?