augskrvabag0agtuugxgicgix was came to Japan in hindi or at least a few years 6AM from diar in the same year
Answer:
The answer is;
The mass of the cable is 7.428 kg
Explanation:
Force = 110 N
Mass of block = 20 kg
velocity = 3.9 m/s
We apply the law of motion which is
v² = u² + 2·a·s
Where a = acceleration
s = distance = 1.9 m and
u = initial velocity = 0 m/s
v = velocity = 3.9 m/s
∴ v² = 2·a·s
3.9² = 2×1.9×a which gives
a = 4.003 m/s²
F= m×a
Where F= Force = 110 N
m = mass
a = acceleration = 4.003 m/s²
∴ m = F/a = 110/4.003 = 27.482 kg
Since the mass of the block = 20 kg
Mass of cable + block = 27.482 kg
Mass of cable = 27.428 kg - mass of block = 27.428 kg - 20 kg = 7.428 kg
Mass of cable = 7.428 kg
Power =Force * Velocity
Velocity = Distance/Time = 2/0.5 = 4 m/s
Therefore,
P = 1000*4 = 4000 W = 4 kW
A. How much work is being done to hold the beam in place?
Work is the product of Force and Displacement. Since there
is no Displacement involved in just holding the beam in place, hence the work
is zero.
B. How much work was done to lift the beam?
In this case, force is simply equal to weight or mass
times gravity. Hence the work is:
Work = weight * displacement
Work = 500 lbf * 100 ft
Work = 50,000 lbf * ft
C. How much work would it take if the steel beam were
raised from 100 ft to 200ft?
The displacement is still 100 ft since 200 – 100 = 100 ft,
hence the work done is still similar in B which is:
<span>Work = 50,000 lbf * ft</span>
lol I'm not sure if you were meant to add an image or if this is a joke but 1+1 is 2 ig
