1) A 5kg block issuspended by a rope from the ceiling of an elevator as the elev

Question

1) A 5kg block issuspended by a rope from the ceiling of an elevator as the elevatorstarts from rest and accelerates downward at 3.0m/s^2

a) The force from the rope on the block is?
      
A)64N, up
B) 15N, up
C) 34N, up
D) 64N, down
E)34N, down

b) After the block has traveled for 2s, its gravitational potentialenergy has changed by?
A)500J
B)600J
C)-300J
D) 300J
E) -600J

c) What is the work done by the force of the rope on the blockduring this period? A) -400J B) -200J C) 200J D)90J E)-390J 1) A 5kg block issuspended by a rope from the ceiling of an elevator as the elevatorstarts from rest and accelerates downward at 3.0m/s^2

a) The force from the rope on the block is?
      
A)64N, up
B) 15N, up
C) 34N, up
D) 64N, down
E)34N, down

b) After the block has traveled for 2s, its gravitational potentialenergy has changed by?
A)500J
B)600J
C)-300J
D) 300J
E) -600J

c) What is the work done by the force of the rope on the blockduring this period? A) -400J B) -200J C) 200J D)90J E)-390J

Explanation / Answer

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