davfar334p47luq

25.02.2021 • 

Physics

A solid cylinder with mass m and radius R rolls without slipping down a plane inclined at an angle e. The coefficient of (static) friction
between the cylinder and the plane is ll. Find the linear acceleration
of the cylinder using energy conservation.

The total energy of the system is given by mohlo +mgh.

If the cylinder rolls down the slope without slipping, y = OR and a =Ra.

If it moves a distance x down the plane, its height decreases by x sin o.

Conservation of energy means dE/dt
= 0. Differentiating E,​

Ответ:

mckadams02

16.06.2020

Physics

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2 x 10⁻⁷ m

Explanation:

Since the light from two slits interfere to form dark fringe on the screen ,

the path difference must be odd multiple of λ / 2 .

Since it is the first dark fringe the factor of odd multiple must be one.

So path difference must be

( 2n +1 ) x λ / 2 .

for first dark fringe

n = 0

path difference  =  λ / 2

400 x 10⁻⁹ / 2 m

= 2 x 10⁻⁷ m

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