A single pulley changes the direction of the effort, but it has
no mechanical advantage. The output force is the same as
the input force, so we'd say that the mechanical advantage is 1.
If there are two pulleys, with the rope going up and down and
around between them several times on its way from the effort
to the load, an arrangement that I think is called 'block and tackle',
then the mechanical advantage turns out to be the number of
strands of rope that are supporting the load.
The frequency does the other car hear after they pass each other is 631.8 Hz.
<h3>
Frequency heard by the second car</h3>
The frequency heard by the second car is calculated as follows;
f = f'(v/v - vs)
where;
- f' is the original frequency
- f is the later frequency heard
- v is speed of sound
- vs is source speed
f = 595(343/343 - 20)
f = 631.8 Hz
Thus, the frequency does the other car hear after they pass each other is 631.8 Hz.
Learn more about frequency of car here: brainly.com/question/24338491
#SPJ1
The tension required in order to have a fundamental frequency of 1 hz will be 0.0245 N
<h3>What is tension force?</h3>
The tension force is described as the force transferred through a rope, string, or wire as it is pulled by opposing forces.
The tension force is applied along the whole length of the wire, pulling energy equally on both ends.
The given data is;
L=2m
d=0.5 mm
ρ=7800 kg/m³
f=1 Hz
The mass of the string is found as;
The fundamental frequency of the string is found as;
Hence,the tension required in order to have a fundamental frequency of 1 hz will be 0.0245 N
To learn more about the tension force, refer to the link;
brainly.com/question/2287912
#SPJ4