A uniform rod of length 30cm having a mass of 3 kg
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"A uniform rod of length 30cm having a mass of 3 kg The strings shown in the figure are pulled by constant forces of 20 N and 32 N.
Find the force exerted by 20 cm part of the rod on the 10 cm pan. All the surfaces are smooth and the strings and pulleys are light.
Net force on the rod, f=32−20=12N Acceleration of rod =fm=123=4ms−2 Equation of motion of 10 cm part is F−20=m×a=1×4 F=4+20=24N Similarly, Equation of motion 20 cm part is 32−F=m′a=2×4 F=32−8=24N
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