[ T ] A boy applies the brakes on a bicycle by applying a downward force of 20 lb on the pedal when the 6-in . crank makes a 40° angle with the horizontal (see the following figure). Find the torque at point P . Express your answer in foot-pounds rounded to two decimal places.
[ T ] A boy applies the brakes on a bicycle by applying a downward force of 20 lb on the pedal when the 6-in . crank makes a 40° angle with the horizontal (see the following figure). Find the torque at point P . Express your answer in foot-pounds rounded to two decimal places.
[
T
]
A boy applies the brakes on a bicycle by applying a downward force of
20
lb
on the pedal when the
6-in
. crank makes a
40°
angle with the horizontal (see the following figure). Find the torque at point
P
. Express your answer in foot-pounds rounded to two decimal places.
A Ferris wheel was built for an exposition. It held 2100 people, had a diameter of 251 ft, and took 25 minutes to make one revolution. Find the linear velocity in ft/sec for a person riding this wheel.
The linear velocity is ft/sec.
(Type an integer or decimal rounded to the nearest tenth as needed.)
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Max is riding a bicycle with 12 inch diameter tires. If he is riding at 15 miles per hour, how many revolutions per
minute are the tires rotating? (round to the nearest rpm)
An object thrown downward from a 500-m cliff travels 57.2 m in 3 sec. What was the initial velocity of the object? (Use 4.9t + vot=s, where v, is initial velocity, t is time, and s is distance.)
The initial velocity was
(Simplify your answer. Type an integer or a decimal rounded to the nearest tenth as needed.)
Using and Understanding Mathematics: A Quantitative Reasoning Approach (6th Edition)
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