Answer:
4Hz (240 cycles/60 seconds = 4 cycles/second)
Explanation:
hope this helped!
2<span>cos2(θ)−1 = 0
</span><span>2cos2(θ)=1
</span><span>cos2(θ)=1/2
</span><span>2θ=arc cos1/2
</span><span>2θ=60 degrees
</span><span>θ=30 degrees</span>
Answer:
The maximum frequency of revolution is 3.6 Hz.
Explanation:
Given that,
Mass = 8 kg
Distance = 400 mm
Tension = 800 N
We need to calculate the velocity
Using centripetal force

Where, F= tension
m = mass
v= velocity
r = radius of circle
Put the value into the formula



We need to calculate the maximum frequency of revolution
Using formula of frequency

Put the value into the formula


Hence, The maximum frequency of revolution is 3.6 Hz.
A
because waves need air or something else to travel through
Answer:
Explanation:
given,
initial velocity of the ball = 20 m/s
angle of ramp = 22°
ball travel at a distance = 5 m
a) for friction less




v = 17.58 m/s
b) considering the friction




v = 17.16 m/s