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A ball of mass 0.2 kg is thrown vertical...

A ball of mass 0.2 kg is thrown vertically upwards by applying a force by hand. If the hand moves 0.2 m while applying the force and the ball goes upto 2 m height further, find the magnitude of the force. (Consider `g=10m//s^2`).

A

20N

B

22N

C

4N

D

16N

Text Solution

Verified by Experts

The correct Answer is:
B
`v^(2)-u^(2)=2as, F-mg =ma`
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Knowledge Check

  • A particle of mass 100 g is thrown vertically upwards with a speed of 5 m/s. The work done by the force of gravity during the time the particle goes up is

    A
    ` 0.5J`
    B
    ` -0.5 J`
    C
    ` -1.25 J`
    D
    `1.25 J`

  • A particle of mass 100 g is thrown vertically upwards with a speed of 5 m//s . The work done by the force of gravity during the time the particle goes up is

    A
    `-0.5 J`
    B
    `-1.25 J`
    C
    1.25 J
    D
    0.5 J

  • A particle of mass 100 g is thrown vertically upwards with a speed of 5 m//s . The work done by the force of gravity during the time the particle goes up is

    A
    `-0.5 J`
    B
    `-1.25 J`
    C
    1.25 J
    D
    0.5 J