text: # physics
  
  posted by .
  
  A rope of negligible mass passes over a puley of a negligible mass attached to the ceiling. One end of the rope is held by stdent A of mass 70 kg who is at rest on the floor. The opposite end of the rope is held by student B of mass 60 kg who is suspended at rest above the floor
  
  calculate the magnitude of the force exerted on the floor by student A
  
  I said 700 N and aparently this is wrong and I don\'t see why
  
  • physics -
  
  If this question is asking for the normal force i got 100 n but i\'m not sure that is what it is asking for
  
  • physics -
  
  The suspended student B's weight is balanced by a rope force Mb*g = 588 N. This becomes an upward force on Student A. A is held in equilibrium by ground force Fg (up), rope force (up) and his weight Mb*g (down).
  Fg + 588 = Mb*g = 686 N
  Fg = 686 - 588 = 98 N
  
  If you are using 10 m/s^2 for g, you'd get 100 N for the answer. I used 9.8.
  
  ## Similar Questions
  
  1. ### physics
  
  A light rope is attached to a block with a mass of 6 kg that rests on a horizontal, frictionless surface. THe horizontal rope passes over a frictionless, massless pulley, and a block of mass m is suspended from the other end. When …
  2. ### Physics
  
  A beam of mass mb = 10.0 kg, is suspended from the ceiling by a single rope. It has a mass of m2 = 40.0 kg attached at one end and an unknown mass m1 attached at the other. The beam has a length of L = 3 m, it is in static equilibrium, …
  3. ### Physics
  
  A beam of mass mb = 10.0 kg, is suspended from the ceiling by a single rope. It has a mass of m2 = 40.0 kg attached at one end and an unknown mass m1 attached at the other. The beam has a length of L = 3 m, it is in static equilibrium, …
  4. ### Physics
  
  You pull downward with a force of 32 N on a rope that passes over a disk-shaped pulley of mass 1.3 kg and radius 0.075 m. The other end of the rope is attached to a 0.60 kg mass. Find the linear acceleration of the 0.60 kg mass.
  5. ### physics
  
  A block of mass M = 6.755 kg is pulled along a horizontal frictionless surface by a rope of mass m = 0.592 kg, as shown in Fig. 5-63. A horizontal force = 41.5 N is applied to one end of the rope. Assume that the rope only sags a negligible …
  6. ### physics
  
  A mass hangs on the end of a massless rope. The pendulum is held horizontal and released from rest. When the mass reaches the bottom of its path it is moving at a speed v = 2.3 m/s and the tension in the rope is T = 22.4 N. 1. What …
  7. ### Physics
  
  A conical pendulum is constructed from a rope of length l and negligible mass, which is suspended from a fixed pivot attached to the ceiling. A small ball of mass m is attached to the lower end of the rope. The ball moves in a circle …
  8. ### PHYSICS 1301 (COLLEGE)
  
  As shown in the figure below, two masses m1 = 4.10 kg and m2 which has a mass 50.0% that of m1, are attached to a cord of negligible mass which passes over a frictionless pulley also of negligible mass. If m1 and m2 start from rest, …
  9. ### Physics
  
  As shown in the figure below, two masses m1 = 4.40 kg and m2 which has a mass 80.0% that of m1, are attached to a cord of negligible mass which passes over a frictionless pulley also of negligible mass. If m1 and m2 start from rest, …