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For a block of mass m to slide without f...

For a block of mass m to slide without friction up the rise of height h shown, it must have a minimum initial speed of:

A

`1//2 sqrt(gh)`

B

`sqrt(gh//2)`

C

`sqrt(2gh)`

D

`2sqrt((m)/(2gh))`

Text Solution

Verified by Experts

The correct Answer is:
C
Applying energy conservation , `" "1/2 mv^2 = mgh implies v = sqrt(2 gh)`.
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