A. 1 sec and 99.4 cm
B. 1 sec and 92.7 cm
C. 2 sec and 99.4 cm
D. 2 sec and 92.7 cm
Related Mcqs:
- A simple pendulum of length / has an energy E, when its amplitude is A. If the length of pendulum is doubled, the energy will be___________________?
A. E
B. E/2
C. 2E
D. 4E - A simple pendulum of length 1 has an energy E when its amplitude is A. If its amplitude is increased to 2 A, the energy becomes____________________?
A. E
B. E/2
C. 2E
D. 4E - The time period of a simple pendulum depends on__________________?
1) mass of suspended particle
2) length of the pendulum
3) acceleration due to gravity
The correct answer isA. only (1)
B. both (2) and (3)
C. both (1) and (3)
D. all are correct - 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. 1/2
B. 3/2
C. 2
D. 3 - If a flywheel increases its speed from 10 rpm to 20 rpm in 10 seconds, then its angular acceleration is_____________________?
A. —rad/sec 10
B. —rad/sec 20
C. —rad/sec 30
D. none of the above - A stone was thrown vertically upwards from the ground with a velocity of 50 m/sec. After 5 seconds another stone was thrown vertically upwards from the same place. If both the stones strike the ground at the same time, then the velocity with which the second stone was thrown should be (Assume g = 10 m/sec2)______________________?
A. 15 m/sec
B. 25 m/sec
C. 40 m/sec
D. 50 m/sec - A particle moves in a straight line and its position is defined by the equation x = 6 t2 – t3 where t is expressed in seconds and x in meters. The maximum velocity during the motion is_________________?
A. 6 m/sec
B. 12 m/sec
C. 24 m/sec
D. 48 m/sec - Two balls of masses 3 kg and 6 kg are moving with velocities of 4 m/sec and 1 m/sec respectively, towards each other along the line of their centers. After impact the 3 kg ball comes to rest. This can happen only if the coefficient of restitution between the balls is____________________?
A. 2/3
B. 1/5
C. 3/5
D. 1/3 - A cable loaded with 10 kN/m of span is stretched between supports in the same horizontal line 100 m apart. If the central dip is 10 m, then the maximum and minimum pull in the cable respectively are____________________?
A. 1346.3 kN and 1500 kN
B. 1436.2 kN and 1250 kN
C. 1346.3 kN and 1250 kN
D. 1436.2 kN and 1500 kN - The angles between two forces to make their resultant a minimum and a maximum respectively are__________________?
A. 0° and 90°
B. 180° and 90°
C. 90° and 180°
D. 180° and 0°