Question

A block takes t seconds to slide down a smooth inclined plane of angle 450. The same block takes 2t seconds to slide down a rough inclined plane of same angle. The coefficient of friction of the second plane is:

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Answer 1

Answer:

wait minute I will explain

Answer 2

Explanation:

Acceleration along the downward directioon of wedge

α

1

m

(mgsin45

∘

−μmg cos45

∘

)

=

2

(1−μ)g

Let total time taken is t,S=o×t+0.5(μ)t

2

when wedge is friction less

then acceleration

a

2

=

2

g

8=o×

2

t

+.5(a

2

)×(

2

t

)

2

Equate both value of S

μ=

4

3