Question: 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__________________?

• 1. 1/4
• 2. 1/3
• 3. 1/2
• 4. 1/5

Question: The maximum value of the horizontal range for a projectile projected with a velocity of 98 m/sec is__________________?

• 1. 98 m
• 2. 490 m
• 3. 980 m
• 4. 1960 m

Question: For a given velocity of a projectile, the range is maximum when the angle of projection is___________________?

• 1. 30°
• 2. 45°
• 3. 90°
• 4. 0°

Question: When a circular wheel rolls on a straight track, then the shape of body centrode and space centrode respectively are________________?

• 1. straight line and parabola
• 2. straight line and circle
• 3. circle and straight line
• 4. circle and parabola

Question: The angular speed of a car while taking a circular turn of radius 100m at 36 km/hour, is_______________?

• 1. 0.1 radian/sec
• 2. 1 radian/sec
• 3. 100 radian/sec
• 4. 1000 radian/sec

Question: The ratio of the speed of a rolling cylinder to the speed of sliding cylinder is_______________?

• 1. less than 1
• 2. equal to 1
• 3. between 1 and 2
• 4. greater than 2

Question: 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__________________?

• 1. 1/2
• 2. 3/2
• 3. 2
• 4. 3

Question: 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___________________?

• 1. n rpm
• 2. n/2 rpm
• 3. n/4 rpm
• 4. 2n rpm

Question: Rate of change of angular momentum is equal to_______________?

• 1. force
• 2. torque
• 3. linear momentum
• 4. impulse

Question: A solid sphere of mass M and radius R rolls down a plane inclined at 0 with the horizontal. The acceleration of sphere is_______________?

• 1. (1/3) g sin0
• 2. (2/5) g sin 0
• 3. (3/7) g sin 0
• 4. (5/7) g sin0