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Question

A block of mass 8 kg is placed on a rough horizontal surface with coefficient of friction μ = 0.1. A time variable horizontal force F = (2t) N acts on the block as shown in the figure. The acceleration of block at t = 4 s will be (g = 10 m/s2)

8 kg द्रव्यमान के एक गुटके को घर्षण गुणांक μ = 0.1 वाले किसी खुरदरे क्षैतिज पृष्ठ पर रखा जाता है। गुटके पर चित्र में दर्शाए अनुसार एक समय परिवर्ती क्षैतिज बल F = (2t) N क्रियाशील है। t = 4 s पर गुटके का त्वरण होगा


A
2 m/s2
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B
1 m/s2
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C
4 m/s2
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D
Zero

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Solution

The correct option is D Zero

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