3. A carpenter uses a crowbar to remove the top of a box. The top has a resistance of 500 N. The
carpenter applies an input force of 250 N. What is the mechanical advantage of the crowbar?
aw-Hill Companies, In

2

Explanation:

M.A= load/effort

Load= resistance force =500N

Effort= input force = 250N

Hence,

M.A = 500/250

M.A=2

you would expect a sound wave to speed up. - b)

are there answer choices to this question? this seems like a question where you have options to choose from.