58. A mass of 10 kg is suspended from a spring balance . It is pulled by aside by horizontal string so that it makes 60◦ with vertical . the new reading of spring balance in kgwt is 1.10√3 2. 20√3 3.20 4.10 Correct answer is 3. please explain
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draw a diagram with the rope to which the mass is attached to the spring balance being at 60 deg. to vertical. The mass is attached by a horizontal rope and is under tension...
balancing forces in vertical direction: mg = T Cos 60
So T = 2 mg = 20 kgwt.
balancing forces in vertical direction: mg = T Cos 60
So T = 2 mg = 20 kgwt.
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