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## A sphere of mass of 1.55 kg is accelerated upwards by a string to which the sphere is attached. Its speed increases from 2.81 m/s to 4.60 m/

Question

A sphere of mass of 1.55 kg is accelerated upwards by a string to which the sphere is attached. Its speed increases from 2.81 m/s to 4.60 m/s in a time of 2.64 s. Calculate the tension in the string, assuming that the tension remains constant during that time.

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Physics
2 months
2021-07-23T04:38:43+00:00
2021-07-23T04:38:43+00:00 1 Answers
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## Answers ( )

Answer:The tension in the string is

16.24 NExplanation:Given;

mass of the sphere, m = 1.55 kg

initial velocity of the sphere, u = 2.81 m/s

final velocity of the sphere, v = 4.60 m/s

duration of change in the velocity, Δt = 2.64 s

The tension of the string is calculated as follows;

T = 1.55(0.678 + 9.8)

T = 1.55(10.478)

T = 16.24 NTherefore, the tension in the string is

16.24 N