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Sahay Sir > Question Answers > Arihant Physics by D.C Pandey > Volume 1 > Chapter 5 - Laws of Motion > Reading shown in two spring balances S1 and S2 is 90 kg and 30 kg respectively and lft is accelerating upwards with acceleration 10m/s^2.S1 in elongated and S2 is compressed. The mass is stationary with respect to lift. Then the mass of the block will be

Reading shown in two spring balances S1 and S2 is 90 kg and 30 kg respectively and lft is accelerating upwards with acceleration 10m/s^2.S1 in elongated and S2 is compressed. The mass is stationary with respect to lift. Then the mass of the block will be

A mass M is suspended by a rope from a rigid support at A as shown in figure. Another rope is tied at the end B and it is pulled horizontally with a force. If the rope AB makes an angle θ with the vertical in equilibrium then the tension in the string AB is