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![[Post New]](/templates/default/images/icon_minipost_new.gif) 28 Jan 2008 19:59:12 IST
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A triangular wedge of mass m and side length 2R(equilateral) is moving with constant velocity towards sphere (mass m) fixed to inclined plane(60 degrees). After elastic collision, the wedge returns without any rotation. The wedge is in contact with the sphere for time T, in which it experiences constant force F Neglecting friction, find the normal force exerted by plane on wedge PS i hav the soln...didn't understand that either..its long and after some time i'll post it.try till then! Thanx
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" Always remember money isn't everything but make sure you have made a lot of it before talking such nonsense!"
- Bill Gates |
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28 Jan 2008 19:59:38 IST
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Click on figure and download for clear view
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" Always remember money isn't everything but make sure you have made a lot of it before talking such nonsense!"
- Bill Gates |
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28 Jan 2008 20:05:57 IST
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The options are A) 1/2{ mg+ 4/3  3(mv/T)} B) { mg+ 4/ 5(mv/T)} C) { mg- 4/ 3(mv/T)} D) 1/2{ mg+ 4/ 3(mv/T)} |
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29 Jan 2008 12:27:05 IST
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Its the last option...........
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29 Jan 2008 12:27:38 IST
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How?
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" Always remember money isn't everything but make sure you have made a lot of it before talking such nonsense!"
- Bill Gates |
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cuz when the wedge is in contact with the sphere for time T, in which it experiences constant force F, tangent of certain force ( you may calculate ) will be taken into consideration , but when the wedge goes back in the opposite direction ( minus of minus is +ve ...you can see in the last option, so option C is wrong ), cos of certain force will be taken into account ( so options A and B are wrong) So I am 99.99999 percent sure last option is correct. The angle of sliding is given 60 degrees . So tan 60 is root 3 and cos 60 is 1/2 ...both are there in the last option , taking the same reference fame into consideration .
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29 Jan 2008 13:51:16 IST
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vague question... what is v?
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Will nip in at times to solve problems :)
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13 Feb 2008 23:39:08 IST
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draw the snap for the time of contact.............
conserving momentum....
Fsin60 * T = 2mv
normal force produced due to sphere=Fcos60
tot narmal=Fcos60+mgcos60
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"iitian inside" |
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