4200 N is the tension in the cable that pulls the elevator upwards.
The correct option is A.
<h3>What does tension ?</h3>
Tension is the force that is sent through a rope, thread, or wire whenever two opposing forces pull on it. Along the whole length of the wire, the tensile stress pulls equally on all objects at the ends. Every physical object that comes into contact with that other one exerts force on it.
<h3>Briefing:</h3>
We employ the following formula to determine the cable's tension.
Formula:
T = mg+ma............ Equation 1
Where:
T is the cable's tension.
M = Mass of the elevator and the Joey
Accelerating with a
g = Gravitational acceleration
Considering the query,
Given:
m = (300+60) = 360 kg
a = 2 m/s²
g = 9.8 m/s²
Substitute these values into equation 2
T = (360×9.8)+(360×2)
T = 3528+720
T = 4248 N
T ≈ 4200 to the nearest hundred.
To know more about Tension visit:
brainly.com/question/14177858
#SPJ1
Answer:
non metals and non metals=covalent bond
metals and non metals =ionic bond
transfer all the valence electron to form ionic bond
share valence electron to form covalent bond
Answer:
1)49m/s
2)122.5m
Explanation:
The expression below can be use to calculate the initial velocity from law of motion
V2 - V1= at
Where V2= final velocity
V1= initial velocity( from rest)
a=acceleration
t= time= 5 seconds
But V2=0
V1=gt
Where g= acceleration due to gravity= 9.8m/s^2
V1= 9.8×5
V1=49m/s
Then we can now calculate the maximum height the rocket reaches by using below formula
V^2=2gh
h(max)=v^2/2g
Where h= maximum height
V2= initial velocity
=49^2/(2×9.8)
=2401/19.6
=122.5m
Hence the maximum height it reaches vis 122.5m
Answer:
76
At what angle height and range of projectile are equal?
It means that the range of the projectile with a given initial velocity is same for a pair of projection angles θ and 90° – θ.
Only velocity uses direction of travel in its calculations.