- Messages
- 53
- Reaction score
- 51
- Points
- 28
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see they both are travelling in OPPOSITE directions so 20x6 - 12x15 = (20+12)v And hence v =1.875 whixh is 1.9Marking Scheme says the answer is A but i am getting C
see
see they both are travelling in OPPOSITE directions so 20x6 - 12x15 = (20+12)v And hence v =1.875 whixh is 1.9
View attachment 28795
dis ques please
1 cm = 6 ms ( milli second )
they are asking time interval and we can see that distance - 4.5 and as we know 1 cm = 6ms so time interval will be 4.5 x 6 =27
Lets assume that XY is d , then we take the momentum in the clockwise and anti-clockwise directions which must be equal since the rod is in equilibrium . So , Fsin(30) * d = 10 * d/2 ,0.5 x force x extension = 0.5 x 17 x ( 30 x 10^-2 )
CAN U PLZ ANSWER THIS
Just divide the area under the graph into two trapeziums and the sum of their areas = the strain energy .
0.5 x force x extension = 0.5 x 17 x ( 30 x 10^-2 )
CAN U PLZ ANSWER THIS
Just divide the area under the graph into two trapeziums and the sum of their areas = the strain energy .
* Bear in your mind the units ( cm > m for the extension ).
0.5 x force x extension = 0.5 x 17 x ( 30 x 10^-2 )
CAN U PLZ ANSWER THIS
L
Lets assume that XY is d , then we take the momentum in the clockwise and anti-clockwise directions which must be equal since the rod is in equilibrium . So , Fsin(30) * d = 10 * d/2 ,
F= 5 / sin(30) = 10 .
It's C then .
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