A bridge of length 50 m and mass 90000 kg is supported at each end as shown below. A truck of mass 30000 kg is located 10 m from the left end. Find the forces at A and B.

Part 1: a magnetic levitation or maglev train rides rails without touching them. explain how this works using your data. include the appropriate magnet drawing in your answer. part 2: two objects are near a bar magnet. one is about 1 cm away, while the other is 6 cm away. compare and contrast the magnetic force that affects each object. use your data to answer the question

Brutus, the dog, is pulling a bone to the left with a force of 20 n. lassie, another dog, is pulling a bone to the right with a force of 18n. what is the net force? a. b. c.

If a simple machine reduces the strength of a force, what must be increased?