Answer:
Your answer is b
Step-by-step explanation:
Here you go mate
Step 1
21=14+7x Equation/Question
Step 2
21=14+7x Simplify
21=14+7x
Step 3
21=14+7x Subtract 14x
7x=7
Step 4
7x=7 Divide by 7
answer
1
Hope this help
Answer:
A(1.15)
Step-by-step explanation:
Step-by-step explanation:
Frequency of a mass-spring system is:
f = √(k/m) / (2π)
Given f = 2/π Hz and m = 20 kg:
2/π Hz = √(k / 20 kg) / (2π)
4 Hz = √(k / 20 kg)
16 s⁻² = k / 20 kg
k = 320 kg/s²
k = 320 N/m
If the 20 kg mass is replaced with an 80 kg mass, the frequency is:
f = √(320 kg/s² / 80 kg) / (2π)
f = √(4 s⁻²) / (2π)
f = 2 Hz / (2π)
f = 1/π Hz
