Advertisements
Advertisements
प्रश्न
When a mass is rotating in a plane about a fixed point, its angular momentum is directed along, ______
विकल्प
a line perpendicular to the plane of rotation
the line making an angle of 45° to the plane of rotation
the radius
tangent to the path
Advertisements
उत्तर
When a mass is rotating in a plane about a fixed point, its angular momentum is directed along, a line perpendicular to the plane of rotation.
APPEARS IN
संबंधित प्रश्न
A thin walled hollow cylinder is rolling down an incline, without slipping. At any instant, without slipping. At any instant, the ratio "Rotational K.E.: Translational K.E.: Total K.E." is ______.
Answer in brief:
Why are curved roads banked?
Do we need a banked road for a two-wheeler? Explain.
Starting from rest, an object rolls down along an incline that rises by 3 in every 5 (along with it). The object gains a speed of `sqrt 10` m/s as it travels a distance of `5/3` m along the incline. What can be the possible shape/s of the object?
During ice ballet, while in the outer rounds, why do the dancers outstretch their arms and legs.
A bend in a level road has a radius of 100m. find the maximum speed which a car turning this bend may have without skidding if the coefficient of friction between the tires and road is 0.8.
Derive an expression for maximum safety speed with which a vehicle should move along a curved horizontal road. State the significance of it.
A railway track goes around a curve having a radius of curvature of 1 km. The distance between the rails is 1 m. Find the elevation of the outer rail above the inner rail so that there is no side pressure against the rails when a train goes around the curve at 36 km/hr.
Give any two examples of torque in day-to-day life.
A uniform metallic rod rotates about its perpendicular bisector with constant angular speed. If it is heated uniformly to raise its temperature to a certain value, its speed of rotation ______.
