Home
Class 9
PHYSICS
If the radius of a steering wheel is in...

If the radius of a steering wheel is increased to four times its original value, then the moment of couple acting on the steering wheel for the given forces

A

increase four times.

B

decreases two times.

C

increases eight times.

D

increases sixteen times.

Text Solution

Verified by Experts

The correct Answer is:
C
`C= F xx d `
` C_(1)= F xx (2 r_(1))`
` C_(2)=F xx (2 r_(2))`
`= F xx 2(4 r_(1))=4 C_(1)`
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • SIMPLE MACHINES

    PEARSON IIT JEE FOUNDATION|Exercise Level- 2|25 Videos

  • SIMPLE MACHINES

    PEARSON IIT JEE FOUNDATION|Exercise Level- 3|10 Videos

  • SIMPLE MACHINES

    PEARSON IIT JEE FOUNDATION|Exercise Essay Type Questions|3 Videos

  • MODERN PHYSICS

    PEARSON IIT JEE FOUNDATION|Exercise Level 3|5 Videos

  • WAVES MOTION AND SOUND

    PEARSON IIT JEE FOUNDATION|Exercise Level 3|10 Videos

Similar Questions

Explore conceptually related problems

The fore wheel of a carriage makes 6 revolutions more than the rear wheel in going 120m. If the diameter of the fore wheel be increased by 1/4 its present diameter and the diameter of the rear wheel be increased by one-fifth of its present diameter, then the fore wheel makes 4 revolutions more than the rear wheel in going the same distance. Find the circumference of each wheel of the carriage.

A constant net torque equal to 20 N-m is exerted on a pivoted wheel for 8 sec, during which time the angular velocity of the wheel increases from zero to 100 re // min. The external torque is then removed and the wheel is brought to rest by friction in its bearings in 70 sec. Compute (a) the moment of inertia of the wheel about the rotation axis, (b) the friction torque(c)thetotal no. of revolutions made by the wheel in the70 sec time interval

Knowledge Check

  • If the radius of a potentiometer wire is increased four times, keeping its length constant, then the value of its potential gradient will become

    A
    half
    B
    two times
    C
    four times
    D
    constant

  • Two wheels are connected by a belt. The radius of the larger wheel is three times that of the smaller one. What is the ratio of the moment of inertia of larger wheel to the smaller wheel, when both wheels have same angular momentum?

    A
    3
    B
    6
    C
    9
    D
    12

  • Who speaks of Cabinet system as "the steering wheel of the ship of state " ?

    A
    Lowell
    B
    Muir
    C
    Marriot
    D
    Bagehot

    • Similar Questions

    Explore conceptually related problems

    The radius of the wheel of a wheel and axle is 4 times the radius of the axle. What is the mechanical advantage of the wheel and axle?

    Two wheels are connected by a belt. The radius of larger wheel is three times that of the smaller one . What is the ratio of the rational inertia of larger wheel to the smaller wheel , when both wheels to the same angular momentum ?

    A torque of 100 N-m acting on a wheel at rest, rotates it through 200 radian in 10 s. What is the moment of inertia of the wheel?

    The moment of interia of an angular wheel shown in figure is 3200 kgm^2 . If the inner radius is 5 cm , and the outer radius is 20 cm , and the wheel is acted upon bu the forces shown, then the angular acceleration of the wheel is. .

    The radii of the axle and the wheel are increased by 3 times and 5 times, respectively. The new M.A. advantage of the wheel and axle is

    Home
    Profile