- Messages
- 455
- Reaction score
- 7,676
- Points
- 503
First find the acceleration.Can someone please give me the final answer and working for this question.
Acceleration = (forces aiding acceleration - forces opposing acceleration)/ sum of masses
Here, Block A has higher mass so acceleration will be in the direction of A. In other words A will move down.
Therefore.
After resolving forces you will get acceleration = (40sin53 - 20sin37)/(4 + 2) = 10/3
Now, For tension. Remember when acceleration is downwards the equation to find tension is F - T = ma
So, just plug in the values. You can take any one block. A or B. Ill take A
40sin53 - T = (4)(10/3)
- T = 13.33 - 40sin53
- T = - 18.61
T = 18.61
Rounding off will give you 18.7 That is your option B