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Two bodies of unequal masses have same l...

Two bodies of unequal masses have same linear momentum. Which one has greater K.E. ?

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Tow bodies of unequal masses have same K.E. Which one has greater linear momentum?

A light and a heavy body have equal momenta. Which one has greater K.E

Two bodies of masses m_1 and m_2 have the same linear momentum. What is the ratio of their kinetic energies?

Relation between kinetic energy and momentum Let us consider a body of mass 'm' having a velocity 'v', then momentum of the body P = mass xx velocity P = m xx v rArr v = (P)/(m) " "...(1) From definition, kinetic energy (K.E) of the body K.E = (1)/(2) mv^(2)" "...(2) Now putting the value of (1) in (2) we have K.E = (1)/(2)m ((P)/(m))^(2) K.E. = (1)/(2)m (P^(2))/(m^(2)) = (1)/(2) (P^(2))/(m) = (P^(2))/(2m)" "...(3) Thus we can write P^(2) = 2m xx K.E rArr P = sqrt(2m xx K.E) Thus momentum = sqrt(2 xx "mass" xx "kinetic energy") Two bodies A and B of unequal masses having same momentum have masses in the ratio 1 : 2 then their K.E are in the ratio

Assertion : If two objects of different masses have same momentum, the lighter body possess greater velocity. Reason : For all bodies momentum always remains same.

Oxygen and Helium gases are in same container. Which one has greater K.E. per molecules?

Two bodies of masses m and 2m have same momentum. Their respective kinetic energies E_(1 ) and E_(2) are in the ratio

A light body and a heavy body have same kinetic energy. Which one has greater linear momentum?

The moments of inertia of two rotating bodies A and B are I_(A) and I_(B). (I_(A) gt I_(B)) and their angular momenta are equal. Which one has greater K.E. ?

SL ARORA-Work, Energy and power-EXERCISE
  1. Two bodies of unequal masses have same linear momentum. Which one has ...

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  2. What is the work done is crrrying a suitcase wighting 10 kg f on his h...

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  3. What is the work done is crrrying a suitcase wighting 10 kg f on his h...

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  4. Calculate the amount of work done by a labourer who carries n bricks, ...

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  5. A man moves on a straight horizontal road with a block of mass 2 kg i...

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  6. A force F = (2hati-6 hatj) N is applied on a body. which is sliding ov...

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  7. A force vecF=hat i+5 hat j+7 hat k acts on a particle and displaces it...

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  8. A particle is acted upon by constant forces vecF=-2hati+3hatj+4hatk an...

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  9. A man weighing 50kg f supports a body of 25 kg f on his head. What is ...

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  10. Explain how work done by a variable force may be measured.

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  11. A force F=(15+0.50x) acts on a particle in the X-directation ,where F ...

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  12. A force F=a+b x acts on a particle in the X-direction, where a and b a...

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  13. The relation between the displacement x and the time t for a body of m...

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  14. Figrue shows the F-x graph. Where F is the force applied x is the dist...

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  15. Calculate work done in moving the object from x=2 to x=3m from the gr...

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  16. The momentum of a body of masss of 5kg is 500kg ms^(-1). Find the its...

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  17. A bullet of mass 20g is found is found to pass two points 30cm apart i...

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  18. A body of mass 2kg is resting on rough horizontal surface. A force 20N...

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  19. A body of mass 2kg is resting on a rough horizontal surface. A force o...

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  20. A electron and a proton are detected in a cosmic ray experiment, the e...

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  21. A neutron of mass 1.66xx10^(-27)kg is moving with a speed of 7xx10^(5)...

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