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A rod is pivoted about its centre. A 10 ...

A rod is pivoted about its centre. A 10 N force is applied 4 m from the pivot and another force of 5 N is applied 2 m from the pivot, as shown. The magnitude of the total torque about the pivot is

A

Changes in pressure have no effect on the speed of sound

B

The speed of sound in water is higher than in air

C

Changes in temperature have no effect on the speed of sound

D

Frequency of sound wave does not change while travelling in different medium

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AAKASH INSTITUTE ENGLISH-TEST 4-EXAMPLE
  1. Two discs are mounted on frictionless bearings on a common shaft. The ...

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  2. From a complete ring of mass M and radius R, a 30^@sector is removed. ...

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  3. A rod is pivoted about its centre. A 10 N force is applied 4 m from th...

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  4. Find the moment of inertia of a uniform square plate of mass M and edg...

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  5. A cycle tyre of mass M and radius R is in pure rolling over a horizont...

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  6. The moment of inertia of a thin square plate ABCD, fig, of uniform thi...

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  7. A boy of mass 30 kg is standing at one end on a stationary boat over a...

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  8. A uniform plank is supporeted by two equal 120 N forces at x and y as ...

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  9. A thin uniform wire of mass m and length l is bent into to shape of a ...

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  10. A ring rolls down an inclined plane and acquires a velocity v upon rea...

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  11. A thin ring of mass m and radius R is in pure rolling over a horizonta...

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  12. A 16 kg block is attached to a cord that is wrapped around the rim of ...

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  13. A ring is rolling without slipping. The ratio of translational kinetic...

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  14. A pulley with a radius of 3 cm and rotational inertia of 4.5xx10^-3 kg...

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  15. The moment of inertia of a cube of mass M and edge length a about an a...

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  16. The moment of inertia of a solid sphere of radius R about an axis pass...

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  17. A hollow sphere rolls down a rough inclined plane whose angle of incli...

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  18. A body of mass m is projected with a velocity u at an angle theta with...

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  19. The centre of mass shifts by a distance S, when a square of side frac{...

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  20. A particle of mass 300 g is moving with a speed of 20 ms^-1 along the ...

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