13. A set of pulleys lifts an 800 N crate 4 meters in 7 seconds. What power was used?
2 answers:
Answer:
457.14 Watt
Explanation:
The information we have is:
Force:
Distance:
Time:
the formula for the power is:
where is work, and
si time.
Also, the formula for work is:
Where is the force, and
is the distance.
Substituting the formula for work into the formula for power:
substituting all the values to find the power:
the power that was used is 457.14 Watt
You might be interested in
Vector u :
u = 6 i - 3 j
The magnitude of vector u :
| u | =
Answer:
The magnitude of vector u is 3√5.
u = 6 i - 3 j
The magnitude of vector u :
| u | =
Answer:
The magnitude of vector u is 3√5.
Answer:
Explanation:
initial velocity
magnitude of velocity, v = 12 m/s
angle made of velocity with negative x-axis,θ = 60°
We need to calculate x- component of v
velocity is in negative x-direction, v = -12 m/s
now,
Hence, the velocity x-component is equal to -6 m/s.