Physics
29.03.2020 14:30
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Acar of mass 1000kg goes on a circular track with a diameter of 100m. the car moves

Acar of mass 1000kg goes on a circular track with a diameter of 100m. the car moves at constant speed and makes 6 revolutions in 2 min.

the frequency is hz

the period of the car is s

the speed of the car is m/s
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katiegresham2838
katiegresham2838
4,7(83 marks)

\dfrac{1}{20}seconds^{-1},20seconds,15.7ms^{-1}

Explanation:

Frequency is defined as the number of revolutions made the object in unit time.

Given that it takes 2 minutes 6 revolutions.

So,\frac{6}{2} =3 revolutions can be completed in 1 minute.

So,\frac{3}{60} =\frac{1}{20} revolutions can be completed in a second.

So,frequency is \frac{1}{20}

Period of a object is the inverse of frequency.

Inverse of frequency \frac{1}{\frac{1}{20} }=20

So,period is 20seconds.

Speed of car is the given by the ratio of distance covered in one revolution to the time period.

Distance travelled in one period is \pi d where d is the diameter.

Given that d=100m

So,distance travelled in one revolution \pi \times 100=315.15m

Time period is 20seconds.

Speed is \frac{314.15}{20}=15.7ms^{-1}

dwavy29
dwavy29
4,6(100 marks)

objects in motion tend to stay in motion unless acted upon by an outside force.

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