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Andreas93 [3]
3 years ago
9

Im confused on how to do this

Physics
1 answer:
Grace [21]3 years ago
7 0

Explanation :

(1) No. of jumping jacks, n=120

time, t=6\ minutes=360\ sec

So, frequency is f=\dfrac{n}{t}

f=\dfrac{120}{360\ sec}

f=0.33 Hz

(2) The quarter spins 10 times every seconds

So, frequency f=10\ Hz

and the period of one cycle is, t=\dfrac{1}{10\ Hz}

t=0.1\ sec

(3) mass of block, m=1.3\ Kg

force constant of spring, K=250\ N/m

Time period of oscillations is given by :

T=2\pi \sqrt{\dfrac{m}{k}}

T=2\pi \sqrt{\dfrac{1.3\ Kg}{250\ N/m}}

So, T=0.45\ sec

Frequency, F=\dfrac{1}{time\ period}

F=\dfrac{1}{0.45\ sec}

F=2.22\ Hz

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