1.

Two masses of 5 kg and 3 kg are suspended with the help of massless inextensible strings as shown in Fig. Calculate T1 and T2 when whole system is going upward with acceleration = 2 ms2 (use g = 9.8 ms-2).

Answer»

m1 = 5 kg, m2 = 3 kg, g = 9.8 m/s2

Force on mass m1,

T1 − T2 − m1g = m1a

T1 − T2 − 5g = 5a

T1 − T2 = 59.0 N

Force on mass m2

T2 − m2g = m2a

T2 = m2 (g + a)

= 3(9.8+2)

T2 = 35.4

T1 = T2 + 59.0

or T1 = 35.4 + 59.0

= 94.4 N



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