A body is resting on a plane inclined at angle 30° to horizontal. What force would be required to slide it down, if the coefficient of friction between body and plane is 0.3?
एक वस्तु क्षैतिज से 30° के कोण पर झुके हुए समतल पर टिकी हुई है। यदि पिंड और तल के बीच घर्षण का गुणांक 0.3 है, तो इसे नीचे खिसकाने के लिए किस बल की आवश्यकता होगी?
Zero
1 kg
5 kg
None of these
Zero
We know that,
Angle of repose
Here, the angle of inclination is
already greater than angle of repose, hence the block will slide without any
applied force.
Hence, the correct option is (A).
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