A body starts from rest on a long inclined plane of slope 4 5 ∘ . The coefficient of friction between the body and the plane varies as μ = 0.3 x , where x is distance travelled down the plane. The bod

Question

A body starts from rest on a long inclined plane of slope $4 5^{\circ}$ . The coefficient of friction between the body and the plane varies as $μ = 0.3 x$ , where $x$ is distance travelled down the plane. The body will have maximum speed (for $g = 10 m / s^{2}$ ) when $x =$

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D

Solution:

When the body has maximum speed then $μ = 0.3 x = tan 4 5^{\circ} ∴ x = 3.33 m$

TestHub · Accepted Answer

When the body has maximum speed then ​ μ = 0.3 x = tan 4 5 ∘ ∴ x = 3.33 m ​

Physics - NLM Question with Solution | TestHub

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