Home
Class 12
PHYSICS
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

Verified by Experts

The correct Answer is:
A, B
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

Similar Questions

Explore conceptually related problems

A car moving with constant speed of 72 km h 1 is said to be moving at ......... ms^(-1).

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?

Knowledge Check

  • 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?

    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.

    • Similar Questions

    Explore conceptually related problems

    For a vehicle moving on a banked curved road, using free body diagram (FBD), obtain the formula for the maximum safe speed v_(max) .

    Give the magnitude and direction of the net force acting on (a) a drop of rain falling down with a constant speed, (b) a cork of mass 10 g floating on water, (c) a kite skillfully held stationary in the sky, (d) a car moving with a constant velocity of 30 km/h on a rough road, (e) a high-speed electron in space far from all material objects, and free of electric and magnetic fields.

    A car starting from rest is acceleration at constant rate until it attains a speed of 12 m/s. It moves with the constant speed 12 m/s for some time and then it is retarded at other constant rate until it comes to rest. Considering theta the car moves with constant speed for half of the time of total journey, what will be the average speed of the car for the whole journey (in m/s) ?

    A car runs at constant speed around the horizontal race track shown in the figure. Over which portion of the track is the magnitude of the acceleration the greatest?

    Man A is sitting in a car moving with a speed of 54 (km)/(hr) observes a man B in front of the car crossing perpendicularly a road of width 15 m in three seconds. Then the velocity of man B (in (m)/(s) ) will be:

    A car is moving along a banked road laid out as a circle of radius r . (a) What should be the banking angle theta so that the car travelling at speed v needs no frictional force from tyres to negotiate the turn ? (b) The coefficient of friction between tyres and road are mu_(s) = 0.9 and mu_(k) = 0.8 . At what maximum speed can a car enter the curve without sliding toward the top edge of the banked turn ?

    A car travels a distance d on a straight road in two hours and then returns to the starting point in next three hours. Its average speed is:-

    Home
    Profile