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Physics-

General

Easy

Question

Rolling friction is always...

Maximum
Minimum
Equal to zero
None

The correct answer is: Minimum

Related Questions to study

The block in the above question is maintained at the position by external means and the level of liquid is lowered. The height h₂ when this external force reduces to zero is...

The block in the above question is maintained at the position by external means and the level of liquid is lowered. The height h₂ when this external force reduces to zero is...

physics-General

A wooden cylinder of diameter 4r, height h and density ρ/3 is kept on a tank of diameter 2r filled with liquid of density ρ as shown in figure. Now level of the liquid starts decreasing slowly. When the level of liquid is at a height h_s above the cylinder the block starts moving up. At what value of h₁ , will the block rise ?

A wooden cylinder of diameter 4r, height h and density ρ/3 is kept on a tank of diameter 2r filled with liquid of density ρ as shown in figure. Now level of the liquid starts decreasing slowly. When the level of liquid is at a height h_s above the cylinder the block starts moving up. At what value of h₁ , will the block rise ?

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A body floats in a liquid contained in a beaker, the whole system as shown falls freely under gravity. The up thrust on the body is

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A piece of iron of density $7.8 cross times 10 to the power of 3 end exponent k g divided by 3$ and volume 100cm³ is totally immersed in water Calculate upthrust if $open parentheses d equals 1000 to the power of k g end exponent divided by m to the power of 3 end exponent close parentheses$

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A beaker containing a liquid of density ρ moves up with an acceleration a. The pressure due to liquid at a depth h below the free surface of liquid is..

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The rate of change of area of a square plate is equal to that of the rate of change of its perimeter. Then length of the side is

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If $S equals 2 t to the power of 3 end exponent minus 3 t to the power of 2 end exponent plus 15 t minus 8$ , then the initial velocity is

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The curves $blank x to the power of 2 end exponent minus y to the power of 2 end exponent equals 5 blank$ and $blank fraction numerator x to the power of 2 end exponent over denominator 18 end fraction plus fraction numerator y to the power of 2 end exponent over denominator 8 end fraction equals 1 blank$ cut each other at the common point at an angle

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The area of the triangle formed by the tangent to the curve $blank y equals fraction numerator 8 over denominator 4 plus x to the power of 2 end exponent end fraction blank$ at x=2 on it and the axes is

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If the normal line at (1, -2) on the curve $blank y to the power of 2 end exponent equals 5 x minus 1 blank$ is ax - 5y + b = 0 then the values of a and b are

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