Question

The time to move along the plane is 1.2times the time to fall vertically . What the angle of plane with the horizontal

Answer 1

Answer:

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Explanation:

Let height be h and the slope be θ

⇒l=

sinθ

h

Component of g along the inclined =gsinθ

∴l=

2

1

gsinθ⋅t

2

sinθ

h

=

2

1

gsinθ⋅t

2

⇒t=

g

2h

×

sinθ

1

For second block:

h=

2

1

gt

′2

t

′

=

g

2h

t

′

=

2

t

Therefore, on simplifying ,

2=

sinθ

1

sinθ=

2

1

⇒θ=

6

π