Please help me with this question,giving the first correct answer brainliest
2 answers:
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Answer:
T = 4000 N
Explanation:
We have,
Mass of an elevator, m = 500 kg
It is moving downward with an acceleration of . It is required to find the tension force of the cable on the elevator. We know that when the elevator is moving downward, the net force on it is given by :
g is acceleration due to gravity
So, the tension force of the cable on the elevator is 4000 N.
Answer:
The length of the simple pendulum is 2.4 meters.
Explanation:
Time period of simple pendulum is given by :
L is the length of pendulum
The time period of the rope is given by :
L' is the length of the rod, L' = 3.6 m
It is given that, the rod have the same period as a simple pendulum and we need to find the length of simple pendulum i.e.
On solving the above equation as :
L = 2.4 m
So, the length of the thin rod that is hung vertically from one end and set into small amplitude oscillation 2.4 meters. Hence, this is the required solution.
Answer:
0.5 second
Explanation:
We are given that
Force, F=20 N
Mass, m=5 kg
Change in velocity,=2m/s
We have to find the time taken to change the velocity .
We know that
Force, F=ma
Where
Acceleration, a=Change in velocity/time
Substitute the values