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Longitudinal Strain

45.A block of...

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45.A block of mass m is to be raised by a light rope from rest to rest through a height 60 m, the maximum tension of which the rope can safely bear is 4mg. The least time in which the ascent can be made is

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10

k g

stone is suspended with a rope of breaking strength

30

k g . w t .

The minimum time in which the stone can be raised through a height

10

m

starting from rest is:
(Taking

g = 10 N k g^{- 1}

)

Q. One end of a massless rope, which passes over a massless and frictionless pulley P is tied to a hook C while the other end is free. Maximum tension that the rope can bear is

840 N

. With what value of maximum safe acceleration (in

m s^{- 2})

60 k g

climb on the rope?

10 kg

stone is suspended with a rope of breaking strength

30 kg-wt

. The minimum time in which the stone can be raised through a height

10 m

starting from rest is (taking

g = 10 N/kg

)

Q. One end of massless rope, which passes over a massless and frictionless pulley

P

is tied to a hook

C

while the other end is free. Maximum tension that the rope can bear is

360 N

. With what value of maximum safe acceleration (in

m s^{- 2})

60 k g

climb on the rope?

A man of mass 30 kg uses a rope to climb which bears only 450 N.The maximum acceleration with which he can climb safely.......

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