A hoop and disc have same mass and radius. Their rotational K.E are related by an equation______________?

A. K.E hoop = K.E disc
B. K.E hoop = 2K.E disc
C. K.E hoop = 1/2K.E disc
D. K.E hoop = 4K.E disc

Related Mcqs:

The rotational K.E of the hoop is equal to the______________?
A. its translational K.E
B. half than its translational K.E
C. double than its translational K.E
D. four times than its translational K.E
A particle of mass m charge q and speed V enters a uniform magnetic radius r. The radius r of the circle is_________________?
A. independent mass m
B. directly proportional to m
C. directly proportional to q
D. directly proportional to B
The radius of geostationary orbit from the centre of the earth is nearly______________?
A. 42000km
B. 36000km
C. 24000 km
D. 18000 km
When a body moves in a circle of radius r with linear speed V its centripetal force is_______________?
A. mV/r2
B. mV/r
C. mV2/r
D. mV2/r2
If a car moves with a uniform speed of 2 ms-1 in a circle of radius 0.4. Its angular speed is______________?
A. 4 rad. S-1
B. 5 rad. S-1
C. 1.6 rad. S-1
D. 2.8 ms-1
A body moving along the circumference of a circle completes two revolutions. If the radius of the circular path is R the ration of displacement to the covered path will be_____________?
A. πR
B. 2π R
C. 0
D. 4πR
If a wheel of radius r turns through an angle of 30° then the distance through which any point on its rim moves is______________?
A. π /3 x r
B. π/6 x r
C. V/30 x r
D. π / 180 x r
Moving along the circumference of a circle completes two revolutions. If the radius of the circular path is R, the ratio of displacement to the covered path will be_______________?
A. πR
B. 2πR
C. 0
D. 4πR
The most suitable unit for expressing nuclear radius is_______?
A. Angstrom
B. Micro
C. Nano meter
D. Fermi

Submitted by: Malik Asghar Hussain
An object travels at constant speed around a circle of radius 1.0 m in 2.0 seconds. What is the magnitude of its acceleration?
A. 0
B. π²
C. 2 π²
D. 4 π²

Submitted by: Tauseef Ali