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A 10 kg block is at rest as shown on a h...

A 10 kg block is at rest as shown on a horizontal surface having a coefficient of static friction of `0.7` String -1 is horizontal and string-2 makes an angle of `30^(@)` with the verticle. A mass M hangs from String- 3. Which of the following statement(S) about this situation is //are ? `(g=10m//s^(2))`

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