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31. The masses M1, M2 and M3 of the three bodies shown in figure are 5, 2 and 3 kg respectively. Calculate the value of T1, T2 andT3. When (1) Whole system is going upward with an accelerationof 2ms ? & (ii) Whole system is stationary. Given g=9.8 ms-2​

Answer»

120NExplanation:GIVEN,a=2ms −2 g=9.8ms −2 ​ For T 1​ T 1​ −5g−T 2​ =5×2=10T 1​ −5g−T 2​ =10​ For T 2​ T 2​ −T 3​ −2g=2×2=4T 2​ −T 3​ −2g=4​ For T 3​ T 3​ −3g=3×2=6T 3​ −2=6gT 3​ =36N​ SOLVING the EQUTIONS,T 2​ −36−20=4T 2​ =60NT 1​ =10+50+60=120N​



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