The shaft of a motor rotates at a constant angular speed of 360rev/min. Angle turned through in 1 sec in radian is________________?
A. π
B. 3π
C. 6π
D. 12π
Physics Mcqs
The angular speed of seconds hand of a watch in rads-1 is______________?
The angular speed of seconds hand of a watch in rads-1 is______________?
A. π
B. π/2
C. π/30
D. π/180
In an angular motion, Newton’s second law of motion is_____________?
In an angular motion, Newton’s second law of motion is_____________?
A. F=ma
B. F=τp/It
C. Στ = I α
D. All above
If a wheel of radius r turns through an angle of 30° then the distance through which any point on its rim moves is______________?
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
A cyclist cycling around a circular racing track skids because_____________?
A cyclist cycling around a circular racing track skids because_____________?
A. the centripetal force upon him is less than limiting friction
B. the centripetal force upon him is greater than limiting friction
C. the centripetal force upon him is equal to the limiting friction
D. the friction between the tyres of the cycle and road vanishes
When a wheel 1 m in diameter makes 30 rev min the linear speed of the point on its rim in ms-1 is_______________?
When a wheel 1 m in diameter makes 30 rev min the linear speed of the point on its rim in ms-1 is_______________?
A. 2π
B. π/2
C. π
D. 20π
The angular speed for daily rotation of the earth in rad S-1 is______________?
The angular speed for daily rotation of the earth in rad S-1 is______________?
A. 7.3 x 10 radians/second
B. 7.3 x 5 radians/second
C. 3.7 x 10 7.3 x 5 radians/second
D. 7.3 x 10-5 radians/second
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 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
A body can have constant velocity when it follows a_____________?
A body can have constant velocity when it follows a_____________?
A. Elliptical path
B. Circular path
C. Parabolic path
D. Rectilinear path
If a car moves with a uniform speed of 2 ms-1 in a circle of radius 0.4. Its angular speed is______________?
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