Question

A person lowers a 1 kg basket down to the floor. At one instant while the person is doing this, the basket has an acceleration straight down of 2.0 m/s2 . What is the lifting force that the person is applying at this instant

Answer 1

The lifting force applied by the person in lowering the basket is determined as 7.8 N.

Lifting force applied

The lifting force applied by the person is determined from Newton's second law of motion.

F = mg - ma

F = m(g - a)

where;

• g is acceleration due to gravity acting downwards

F = 1(9.8 - 2)

F = 7.8 N

Thus, the lifting force applied by the person in lowering the basket is determined as 7.8 N.

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