Home
Class 11
PHYSICS
A car is moving on a circular level road...

A car is moving on a circular level road of curvature `300m` . If the coefficient of friction is `0.3` and acceleration due to gravity is `10m//s^(2)` , the maximum speed of the car be

A

`90Km//h`

B

`81Km//h`

C

`108Km//h`

D

`162Km//h`

Text Solution

Verified by Experts

The correct Answer is:
C
`(mv^(2))/(R)=mumg`
`:. V=sqrt(muRg)=sqrt(0.3xx300xxx10)`
`=30m//s=108Km//h`
Promotional Banner

Topper's Solved these Questions

  • CIRCULAR MOTION

    DC PANDEY|Exercise Level 1 Subjective|13 Videos

  • CIRCULAR MOTION

    DC PANDEY|Exercise Level 2 Single Correct|18 Videos

  • CIRCULAR MOTION

    DC PANDEY|Exercise Assertion And Reason|28 Videos

  • CENTRE OF MASS, LINEAR MOMENTUM AND COLLISION

    DC PANDEY|Exercise Level 2 Subjective|21 Videos

  • COMMUNICATION SYSTEM

    DC PANDEY|Exercise Only One Option is Correct|27 Videos

Similar Questions

Explore conceptually related problems

A car is moving on a horizontal circular track of radius 0.2 km with a constant speed. If coefficient of friction between tyres of car and road is 0.45, then maximum speed of car may be [Take g=10 m//s^(2) ]

A car has to take a safe circular turn on horizontal flat rough road of radius 200 m. If the coefficient of friction between the tyres and road is 0.1 ,then maximum speed of car would be(All are in SI units)

A car is moving along a horizontal curve of radius 20 m , and coefficient of friction between the road and wheels of the car is 0.25 . If acceleration due to gravity is (9.8 m//s^(2)) , then its maximum speed is

A car has to move on a level turn of radius 45 m. If the coefficient of static friction between the tire and the road is mu_s=2.0, find the maximum speed the car can take without skidding.

A car is moving on a horizontal circular road of radius 0.1 km with constant speed. If coefficient of friction between tyres of car and road is 0.4, then speed of car may be (g=10m//s^(2))

A car is moving on a horizontal circular tracck of radius 0*2 km with a constant speed. If coefficient of friction between tyres of car and road is 0*45 , then speed of a car may be [ Take g = 10 m/s^(2)]

A car of mass 800 kg moves on a circular track of radius 40 m . If the coefficient of friction is 0.5, then maximum velocity with which the car can move is

A car is moving on a circular road of radius 100m . At some instant its speed is 20m//s and is increasing at the rate of 3m//s^(2) . The magnitude of its acceleration is

A car of mass 1000 kg moves on a circular track of radius 20 . If the coefficient of friction is 0.64, then the maximum velocity with which the car can move is