A. Drag force of air
B. Gravity
C. Tension in the string
D. None of these
Related Mcqs:
- The force responsible for the vibratory motion of the simple pendulum is_________________?
A. mg cosθ
B. mg sinθ
C. mg tonθ
D. mg - A simple pendulum suspended from the ceiling of a lift has time period T when the lift is at rest. When the lift falls freely, the time period is_________________?
A. Infinite
B. T/g
C. Zero
D. g/T - The restoring force acting on the simple pendulum is given by_______________?
A. mg sin θ
B. mg sin θ
C. mg cos θ
D. mg cos θ - The natural frequency of simple pendulum depends upon_______________?
A. It’s mass
B. It’s length
C. Square of its length
D. The square root of its length - Total distance travelled by a bob of the simple pendulum in one vibration is equal to________________?
A. Amplitude
B. Square of the amplitude
C. 2 x amplitude
D. 4 x amplitude - At Murree Hills (Assume the value of g changes). If we use a simple pendulum as time standard then one-second duration will_____________?
A. Increase
B. Decrease
C. Remains the same
D. Is zero - A simple pendulum has a bob of mass m and its frequency is f. If we replaced the bob with a heavier one say of 2m then that will be its new frequency ?
A. 1/4f
B. 1/2f
C. frequency lower than 20 Hz
D. 2f - The time period of a second pendulum is______________?
A. 4 seconds
B. 3 seconds
C. 2 seconds
D. 6 seconds - The length of the second pendulum is________________?
A. 100 cm
B. 99 cm
C. 99.2 cm
D. 98 cm - If the length of the second pendulum becomes four times, then its time period will become________________?
A. 4 times
B. 6 times
C. 8 times
D. 2 times
