Question

9. You apply 100.0 N of force to a machine. The machine applies 20.0 N of force to the load. What is the mechanical advantage of the machine?
200.0
80.0
5.00
0.200
10. A construction worker is using his weight to keep a stationary stack of wooden beams from falling. If the construction worker uses 689.0 N of force to hold 10 beams stationary against a wall, how much work does he do?
0 J
0.0150 J
68.9 J
6,890 J
11. Metal cookware often comes with plastic handles. The plastic handles
decrease friction.
decrease mechanical advantage.
are insulators.
are cond

Answer 1

11, insulator

Answer 2

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