Question: 1. A man is changing a flat tire using a tire iron that is 50.0 cm long. If he exerts a force of 53.0 N,

1. A man is changing a flat tire using a tire iron that is 50.0 cm long. If he exerts a force of 53.0 N, how much torque (in N m) does he produce?
2. A torque of 81.0 lb ft is produced by a torque arm of 3.00 ft. What force is being applied?
3. A hanging sign has mass 200 kb. If the tension in one support cable is 1080 N, what is the tension in the other support cable?
4. A scaffold supports a bricklayer and bricks weighing 450 lb. If the force in one end support is 290 lb, what is the supporting force in the other?
5. Two ladders at the ends of a scaffold support a mass of 90.0 kg each. An 80.0-kg worker is on the scaffold with a pile of bricks. Find the mass of the bricks.
6. How far from the light end of a 68.0-cm bat would its center of gravity be if it is one-fourth of the length of the bat from the heavy end?
7. A bridge has mass 8000 kg. If a 3200-kg truck stops in the middle of the bridge, what mass must each pier support?

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