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Figureshows a number of equal steps. If ...

Figureshows a number of equal steps. If the 'rise' of each step is h cm, are there are n steps, make a formula for the height (H) in centrimeters of the steps.

A

`H=(1)/(2)nH`

B

`H=2nh`

C

`H=nh`

D

`H=n^(2)h`

Text Solution

Verified by Experts

The correct Answer is:
C
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Knowledge Check

  • If the 'tread' of each step is a cm, and there are n steps, make a formula for the length (d cm) of AB.

    A
    `d=(1)/(2)na`
    B
    `d=na`
    C
    `d=3na`
    D
    `d=na^(2)`

  • The formula for the step deviation method of finding the mean is-

    A
    `barX = (sumx)/(N)`
    B
    `barX =A + (sum d_x)/(N)`
    C
    `barX =A + (sum d_x)/(N) XI`
    D
    `barX = (sumf_x)/(sumf)`

  • A ball is bouncing down a set of stairs. The coefficient of restitution is e. The height of each step is d and the ball bounces one step at each bounce. After each bounce the ball rebounds to a height h above the next lower step. Neglect width of each step in comparison to h and assume the impacts to be effectively head on. Which of the following relative is correct ?

    A
    `(h)/(d) = 1 - e^(2)`
    B
    `(h)/(d) = 1 - e`
    C
    `(h)/(d) = (1)/(1 - e^(2))`
    D
    `(h)/(d) = (1)/(1 - e)`
    • S CHAND IIT JEE FOUNDATION-ALGEBRAIC EXPRESSIONS -SELF ASSESSMENT SHEET-6
    1. Figureshows a number of equal steps. If the 'rise' of each step is h c...

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