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Which of the following planes cannot be ...

Which of the following planes cannot be used to push load to a certain height?

A

A plane of slope 2

B

A plane of slope `oo`

C

A plane of slope 0

D

Both (b) and (c)

Text Solution

Verified by Experts

The correct Answer is:
D
Inclined plane of zero inclination is just a horizontal surface which do not bring any change in the effort requried to do a work. Slope Infinity means the body has to be lifted to zero height i.e there is no requiremnt of an inclined plane. Therefore incilined planes of slope infinity or zero cannot be used.
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