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NEET Class neet Answered

answer the question
Asked by adititiwari601 | 08 Jun, 2022, 10:49: PM
Expert Answer
Forces acting on the blocks are shown in figure .
 
Applied force F equals Tension T in top string , i.e.,  T = F
 
If we apply Newton's second law to the 2 kg block
 
T - T ' - 2 g = 2 × 2 = 4    ........................... (1)
 
If we apply Newton's second law to the 4 kg block
 
 T ' - 4 g = 4 × 2 = 8   .........................(2)
 
By adding eqn.(1) and (2) , we get
 
T - 6 g = 12    or  T = 12 + ( 6 × 9.8 ) = 70.8 N
 
From eqn.(1) , T ' = T - 2g - 4 = 70.8 - 19.6 - 4 = 47.2 N
 
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