If a body of mass 10 kg is allowed to fall freely, its weight becomes______________?

Related Mcqs:

1. A body is falling freely under gravity. How much distance it falls during an interval of time between 1st and 2nd seconds of its motion, taking g=10 ?

   A. 15 m
   B. 20 m
   C. 5 m
   D. 25 m

2. Distance covered by a freely falling body in 2 seconds will be__________________?

   A. 4.9 m
   B. 19.6 m
   C. 39.2 m
   D. 44.1 m

3. A body of 2 kg is suspended from the ceiling of an elevator moving up with an acceleration g. Its apparent weight in the elevator will be______________?

   A. 9.8 N
   B. 19.6 N
   C. 129.4 N
   D. 39.2 N

4. A man of weight W is standing on an elevator which is ascending with an acceleration a. The apparent weight of the man is_______________?

   A. mg
   B. mg – ma
   C. mg + ma
   D. mg – ma

5. If a current carrying solenoid is suspended freely it will__________________?

   A. be rotating
   B. come to rest in N-S direction
   C. vibrating like galvanometer needle
   D. comes to rest after rotation

6. 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

7. A man lifts vertically a weight of 40kg through 1m in 10s; while a chile lifts vertically a weight of 10kg through a distance of 1m in 1s. What will be correct inference ?

   A. man does more work than child
   B. child does more work than man
   C. both do the same amount of work
   D. it is a foolish question

8. A wire suspended vertically from one end is stretched by attaching a weight of 20N to the lower end. The weight stretches the wire by 1mm. How much energy is gained by the wire ?

   A. 0.01J
   B. 0.02J
   C. 0.04J
   D. 1.0J

9. 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

10. If a lift is going up with acceleration, the apparent weight of a body is:

    A. More than the true weight
    B. More or less the true weight
    C. Less than the true weight
    D. Equal to the true weight

    Submitted by: Naveed Tahir