Which,if Any,of the Following Statements Concerning the Work Done by a Conservative
Which,if any,of the following statements concerning the work done by a conservative force is NOT true?
A) It can always be expressed as the difference between the initial and final values of a potential energy function.
B) It is independent of the path of the body and depends only on the starting and ending points.
C) When the starting and ending points are the same, the total work is zero.
D) All of the above statements are true.
E) None of the above statements are true.
You carry a 7.0 kg bag of groceries 1.2 m above the level floor at a constant velocity of 75 cm/s across a room that is 2.3 m room.How much work do you do on the bag in the process?
A) 0.0 J
B) 82 J
C) 158 J
D) 134 J
A crane lifts a 425 kg steel beam vertically a distance of 117 m.How much work does the crane do on the beam if the beam accelerates upward at 1.8 m/s2? Neglect frictional forces.
A) 5.8 × 105 J
B) 3.4 × 105 J
C) 4.0 × 105 J
D) 4.9 × 105 J
An object is acted upon by a force that represented by the force vs.position graph in the figure.What is the work done as the object moves
(a) from 4 m to 6 m?
(b) from 6 m to 12 m?