The shaft of a motor rotates at a constant angular speed of 360rev/min. Angle turned through in 1 sec in radian is________________? April 17, 2025 by admin A. π B. 3π C. 6π D. 12π
What is the outward force acting on a mass of 10 kg when rotating at one end an inelastic string 10m long at speed of 1m/s ? April 17, 2025 by admin A. 1N B. 10N C. 2N D. 100N
If we whirl a stone at the end of a string in the vertical circle, it is likely to break when the stone is________________? April 17, 2025 by admin A. At the highest point B. At the lowest point C. At any point during motion D. At the point where gravity is not acting
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_______________? April 17, 2025 by admin A. πR B. 2πR C. 0 D. 4πR
A man of weight W is standing on an elevator which is ascending with an acceleration a. The apparent weight of the man is_______________? April 17, 2025 by admin A. mg B. mg – ma C. mg + ma D. mg – ma
Who discovered the inverse square law for gravity ? April 17, 2025 by admin A. Einstein B. Galileo C. Newtons D. Plank
The planet nearest to the earth is______________? April 17, 2025 by admin A. Venus B. Mercury C. Uranus D. Sun
A satellite moving around the earth constitutes______________? April 17, 2025 by admin A. An inertial frame of reference B. Non-inertial frame C. Neither inertial nor non-inertial D. Both inertial and non-inertial
Minimum number of communication satellites required to cover the whole earth is______________? April 17, 2025 by admin A. 4 B. 3 C. 2 D. 5
A body of 2 kg is suspended from the ceiling of an elevator moving up with an acceleration g. Its apparent weight in the elevator will be______________? April 17, 2025 by admin A. 9.8 N B. 19.6 N C. 129.4 N D. 39.2 N
