Ch 3. A pulley system has
U this system roses
when ท
effort 150
Calculate
a
relocity ratio of
load weighing 400 N
15 applied
а и
4
The
ex
the load
efficiency as the system.
6, the work done by the effort to raise
by a vertical height of 4m.
G. For the
height in (6) moved by the load,
what
the distance
did the effort have
to move
ter
Solution
For the height in (b) moved by the load what distance did the effort have to move

answer; i believe the correct answer is (40,000 j) good luck

it's when something is going so fast it makes a loud noise, breaking the sound barrier, for example: a jet makes a loud noise, not only cause of the jet but because they reached a point where they went so fast that you can year the noise from various parts, kinda like a police car, lets say the car was going   so fast that you hear the siren of the cop car right next to you, but the car is probably a mile a way, it's cos the siren was next to you a few seconds if you understand me