Calculate the work done by a force, , around a closed path, first going from P1 (1,1) to P2 (4,4) along path a and returning along path b.
A) 0 J
B) 3 J
C) 7 J
D) 13 J
E) 17 J
Which of the following statements is NOT correct?
A) The work done by a conservative force on an object is independent on the path taken.
B) The work done by a conservative force on an object along path AB is negative that of path BA.
C) The force due to gravity is an example of a conservative force.
D) Friction is an example of a conservative force.
E) The work done by friction on an object depends on the path taken.
Calculate the work done by a force, , along the path (0,0) P1 (2,0) P2 (2,2).
A) 2 J
B) 4 J
C) 6 J
D) 8 J
E) 10 J
A 75-kg man climbs the stairs to the fifth floor of a building, a total height of 16 m. His potential energy has increased by
A) 1.2 104 J
B) 5.9 104 J
C) 4.7 104 J
D) 3.8 104 J
E) 5.9 103 J