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

विकल्प

• 8 to 7

• 4 to 5

• –1 to –2

• 6 to 9

Answer 1

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