If a projectile is fired with an initial velocity of 10 m/sec at an angle of 60° to the horizontal, its horizontal and vertical velocity at the highest point of trajectory are___________________? A. 0 and 5 m/secB. 5 m/sec and…
A projectile has maximum range of 40 m on a horizontal plane. If angle of projection is a and the time of flight is 1 second, then sin a must be about__________________? A. 1/4(Correct) B. 1/3 C. 1/2 D. 1/5…
The maximum value of the horizontal range for a projectile projected with a velocity of 98 m/sec is__________________? A. 98 m B. 490 m C. 980 m(Correct) D. 1960 m
For a given velocity of a projectile, the range is maximum when the angle of projection is___________________? A. 30° B. 45°(Correct) C. 90° D. 0°
When a circular wheel rolls on a straight track, then the shape of body centrode and space centrode respectively are________________? A. straight line and parabola B. straight line and circleC. circle and straight line D. circle and parabola
The angular speed of a car while taking a circular turn of radius 100m at 36 km/hour, is_______________? A. 0.1 radian/sec(Correct) B. 1 radian/sec C. 100 radian/sec D. 1000 radian/sec
The ratio of the speed of a rolling cylinder to the speed of sliding cylinder is_______________? A. less than 1 B. equal to 1 C. between 1 and 2 D. greater than 2
A flywheel of moment of inertia 20 kg-m” is acted upon by a tangential force of 5 N at 2 m from its axis, for 3 seconds. The increase in angular velocity in radian persecond is__________________? A. 1/2B. 3/2 C.…
A circular disc rotates at n rpm. The angular velocity of a circular ring of same mass and radius as the disc and to have the same angular momentum is___________________? A. n rpmB. n/2 rpm C. n/4 rpm D. 2n…
Rate of change of angular momentum is equal to_______________? A. force B. torque(Correct) C. linear momentum D. impulse