Answer:
31.1 N
Explanation:
m = mass attached to string = 0.50 kg
r = radius of the vertical circle = 2.0 m
v = speed of the mass at the highest point = 12 m/s
T = force of the string on the mass attached.
At the highest point, force equation is given as
Inserting the values
T = 31.1 N
Answer: Correct answer is B = 1.776933×
Explanation:
Given :
Moment of inertia I = 8.26× kg
Mass of planet m = 6.54× kg
Also, Planet is solid sphere so that, Moment of inertia is I = m =0.4m
Where R is radius of planet
Putting into calculation
We get,
I = m
8.26× = 0.4×6.54××
8.26× = 2.616
3.15749235× =
R = 1.776933×
Thus, Correct answer is B = 1.776933×
Answer: The force constant of the spring is 116.1N/m
Explanation: Please see the attachments below
We know that
• The mass of the elevator is 5000 kg.
Let's draw a free-body diagram.
As you can observe, there are just two forces involved, the weight of the elevator and the tension force. Let's use Newton's Second Law.
But, W = mg = 5000kg*9.8m/s^2 = 49,000 N, and m = 5000 kg, a = 0 (because the speed is constant).
<h2>Therefore, the tension in the cable is 49,000 N.</h2>
The frequency of any wave is (speed) / (wavelength).
Frequency = (330 m/s) / (2m) = 165 per second = <em>165 Hz</em>.
Period = 1 / frequency = 1 / (165 per second) = <em>0.0061 second </em>