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A car is moving with constant speed on a...

A car is moving with constant speed on a rough banked road.

Figure shows the free body diagram of car in three situation A, B & C respectively:

A

Car in A has more speed than car in C

B

Car in A has less speed than car in B

C

FBD for car in A is not possible

D

If `mu gt tan theta` the FBD for car C is not possible

Text Solution

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The correct Answer is:
A, B
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Knowledge Check

  • A car is moving with 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 glane 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 ?

    A
    The speed of the car in the rear is `65 km h^(-1)`.
    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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