True! The mechanical advantage of the wheel and axle is equal to the ratio of the radius of the wheel over the radius of the axle.
Which of the following must ALWAYS be equal to the buoyant force on an object?
1 answer:
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Answer:
Explanation:
a) KE = (1/2) * m * () = F * d = 14m * 200N = 2800 m/N or 2.8 *
m/N
b) 0J and 0m/s (if Marcella stopped after going 14 meters)
c) Known from part (a) that KE = 2800 J = F1 * d1,
2800J = F1 * (14m - 1m) => F1 = 2800J/13m = 215.384 N