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Question
A trolly T (mass 5 kg) on a horizontal smooth surface is pulled by a load L (4 kg) through a uniform rope ABC of length 2 m and mass 1 kg. As the load falls from BC = 0 to BC = 2 m, its acceleration (in m/s2) changes from
Options
8 to 7
4 to 5
–1 to –2
6 to 9
MCQ
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Solution
4 to 5
Explanation:
Initial force = 4 × 10 N
Initial acceleration = `40/(5 + 1 + 4)` = 4 m/s2
Final force = 5 × 10 N
Final acceleration = 50/10 = 5 m/s2
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Equation of Motion for Different Systems
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