A. 15°
B. 30°
C. 45°
D. 75°
0
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___________________?
0
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. 0 and 5 m/sec
B. 5 m/sec and 0
C. 5 V3 m/sec and 0
D. 5 and 5V3 m/sec
0
The maximum value of the horizontal range for a projectile projected with a velocity of 98 m/sec is__________________?
A. 1/4
B. 1/3
C. 1/2
D. 1/5
Assume g = 10 m/sec2
0
For a given velocity of a projectile, the range is maximum when the angle of projection is___________________?
A. 98 m
B. 490 m
C. 980 m
D. 1960 m
0
When a circular wheel rolls on a straight track, then the shape of body centrode and space centrode respectively are________________?
A. 30°
B. 45°
C. 90°
D. 0°
0
The angular speed of a car while taking a circular turn of radius 100m at 36 km/hour, is_______________?
A. straight line and parabola
B. straight line and circle
C. circle and straight line
D. circle and parabola
0
The ratio of the speed of a rolling cylinder to the speed of sliding cylinder is_______________?
A. 0.1 radian/sec
B. 1 radian/sec
C. 100 radian/sec
D. 1000 radian/sec
0
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. less than 1
B. equal to 1
C. between 1 and 2
D. greater than 2
0
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. 1/2
B. 3/2
C. 2
D. 3
Download App