Answer:
a) R = 186.742 ft
b) θ = 0.7854 rads
c) θ = 14.14 rads
Explanation:
Given:
- The linear tangential velocity v = 200 mph
- The angular frequency a = 15 RPM
- The distance of bottom point from ground c = 3 ft
Find:
- The radius R of the ferris wheel
-Once the wheel is built, John suggests that Tiff should take the first ride. The wheel starts turning when Tiff is at the location P, which makes an angle θ with the horizontal, as pictured. It takes her 1.5 seconds to reach the top of the ride. Find the angle θ. (Round your answer to two decimal places.)
- Poor engineering causes Tiff's seat to fly off in 9 seconds. Describe where Tiff is located (an angle description) the instant she becomes a human missile. (Give your answer as an angle measured counterclockwise from her
starting point P.)
Solution:
- The relationship between linear v and rotational speed w is given by:
v = R*w
200*5280 / 60 = R*15*2*π
R = 200*5280 / 60*15*2*π
R = 186.742 ft
- the angle swept from point P to angle θ above horizontal is given in terms of angular speed:
π/2 + θ = a*2π*1.5 / 60
θ = 15*2π*1.5 / 60 - π/2
θ = 0.7854 rads
- Similarly calculate the angle θ swept entirely till 9 seconds
θ = a*2π*9 / 60
θ = 15*2π*9 / 60
θ = 14.14 rads
- The total angle swept from initial position is θ = 14.14.
Answer:
2.04m/s²
Explanation:
Complete Question
<em>A stationary 10 kg object is located on a table near the surface of the earth. The coefficient of kinetic friction between the surfaces is 0.2. A horizontal force of 40 N is applied to the object. Find the acceleration of the object.</em>
<em />
According to Newtons second law;
\sum F_x = ma_x
F_m - F_f = ma_x
Fm is the applied force
Ff is the frictional force
m is the mass
a is the acceleration
Substitute the given values
40N - nmg = 10a
40 - 0.2(10)(9.8) = 10a
40 - 19.6 = 10a
20.4 = 10a
a = 20.4/10
a = 2.04m/s²
<em>Hence the acceleration of the object is 2.04m/s²</em>
What property/properties of water allowed the water to stick to the penny?
Solution's:
Explanation:
By these properties, the water molecules gets attracted to the other molecules. Hence, this makes the water get stick to the penny.
Answer:
the main term used to locate in the alphabetic index for acute perforated gastrojejunal ulcer is ULCER
Explanation:
because the main is a term identifying disease conditions or injuries
