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A car moves with constant speed of 10 m/...

A car moves with constant speed of 10 m/s in a circular path of radius 10m. The mass of the car is 1000 kg. How much is the required centripetal force for the car?

Text Solution

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`10^(4)N`
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Knowledge Check

  • The mass of a car is 1500 kg. How much work is required to be done on it to make with a speed of 72 km/h ?

    A
    `30xx10^(5)J `
    B
    `3xx10^(5) J `
    C
    `1.6 xx10^(6) J `
    D
    `3xx10^(4)J`

  • A mass of 5 kg is moving along a circular path of radius 1 m . If the mass moves with 300 rev/min , its kinetic energy would be

    A
    `250 pi^(2)`
    B
    `100 pi^(2)`
    C
    `5 pi^(2)`
    D
    0

  • A car is moving with at a constant speed of 60 km h^(-1) on a straight road. Looking at the rear view mirror, the driver finds that the car following him is at a distance of 100 m and is approaching with a speed of 5 km h^(-1) . In order to keep track of the car in the rear, the driver begins to glance alternatively at the rear and side mirror of his car after every 2 s till the other car overtakes. If the two cars were maintaining their speeds, which of the following statement (s) is // are correct?

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    B
    In the side mirror, the car in the rear would appear to approach with a speed of 5 km `h^(-1)` to the driver of the leading car.
    C
    In the rear view mirror, the speed of the approaching car would appear to decrease as the distance between the cars decreases.
    D
    In the side mirror, the speed of the approaching car would appear to increase as the distance between the cars decreases.

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