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**tyuighp****Member**- Registered: 2015-12-04
- Posts: 12

Suppose a particle of mass 3kg moves under the influence of a force F newten The velocity of the particle is given by

v =(1-sin 2t)i+(-1+cos 2t)j , v m\s

Find F ,and F is constant or not

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You might like to try differentiating , then using This gives you as a function of . Is it constant or does it vary with ?

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**tyuighp****Member**- Registered: 2015-12-04
- Posts: 12

thank you but if

then

*Last edited by tyuighp (2017-07-04 03:55:42)*

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That tells you that the magnitude of the force is constant, but the force itself is not.

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**tyuighp****Member**- Registered: 2015-12-04
- Posts: 12

Yes I have some turbulence

Is the force constant or variable

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It is variable, because its vector components each depend on .

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