Two unequal masses of 1kg and 2kg are connected by an inextensible light string passing over a smooth pulley as shown in figure. A force F=20N is applied on 1kg block. Find the magnitude of acceleration of either block. (g=10m/s2)
A
10m/s2
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B
103m/s2
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C
102m/s2
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D
104m/s2
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Solution
The correct option is B103m/s2 FBD of each mass F+g−T=a T−2g=2a Adding both F−g=3a 20−10=3a a=103m/s2