Home
Class 11
PHYSICS
A 40 kg flywheel in the from of a unifor...

A `40 kg` flywheel in the from of a uniform circular disc of `1 m` radius is making `120` rpm. Calculate the angular momentum.

Text Solution

Verified by Experts

Here, `m = 40 kg, r = 1m, n = (120)/(60) rps = 2 rps`
`L = I omega = ((1)/(2)mr^(2)) xx 2pi n = pi n mr^(2)`
`= 3.14 xx 2xx 40 (1)^(2) = 251.2 kg m^(2) s^(-1)`
Promotional Banner

Topper's Solved these Questions

  • SYSTEMS OF PARTICLES AND ROTATIONAL MOTION

    PRADEEP|Exercise PROBLEMS FOR PRACTICE TYPE C|2 Videos

  • SYSTEMS OF PARTICLES AND ROTATIONAL MOTION

    PRADEEP|Exercise PROBLEMS FOR PRACTICE TYPE D|2 Videos

  • SYSTEMS OF PARTICLES AND ROTATIONAL MOTION

    PRADEEP|Exercise PROBLEMS FOR PRACTICE|69 Videos

  • RAY OPTICS

    PRADEEP|Exercise Problem For Practice(a)|25 Videos

  • THERMODYNAMICS

    PRADEEP|Exercise Assertion- Reason Type Questions|19 Videos

Similar Questions

Explore conceptually related problems

A 40 kg flywheel in the formof a uniform circlular disc of 1m radius is making 120 rpm. Calculate the angular momentum.

A 40 kg flywheel in the from of a unifrom circular disc 200 cm . in diameter is making 120 revolutions/minute. Calculate angular momentum. Moment of inertia of disc = (1//2) mass xx ("radius")^(2) .

A flywheel is in the form of a uniform circular disc of radius 1 m and mass 2 kg . The work which must be done on it to increase its frequency of rotation from 5 to 10 rev//s is approximately

A car of mass 300 kg is travelling on a circular track of radius 100 m with a constant speed of 60 m/s Calculate the angular momentum ?

A fly wheel (disc form) of mass 50 kg and diameter 100 cm is making 150 revolutions/ min. What will be the angular momentum of flywheel?

The angular velocity of circular disc of radius 2cm is 20 rad s^(-1) . Calculate the linear velocity of the disc.

A flywheel is in the form of solid circular wheel of mass 72 kg and radius of 0.5 m and it takes 70 rpm, then the energy of revolution is

When a circular disc of radius 0.5 m is rotating about its own axis, then the direction of its angular momentum is

Find the angular momentum about the axis of rotation and kinetic energy. (a) A uniform circular disc of mass m and radius R rotating about its diameter with an angular speed omega . (b) A uniform square plate of mass m and edge L rotating about its diagonal with an angular speed omega .

Calculate the moment of inertia of uniform circular disc of mass 500 g, radius 10 cm about : diameter of the disc