(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

The Ball has a mass of 30 kg and a speed v = 4 m/s at the instant it is at its lowest point, θ = 0°. Determine the tension in the cord and the rate at which the ball's speed is decreasing at the instant θ = 20°. Neglect the size of the ball.

2. Relevant equations

ΣF = ma

a_{n}= v^{2}/ρ

3. The attempt at a solution

T = mg + mv^{2}/ρ

= 30kg(9.81 m/s^{2}) + 30kg(4 m/s^{2})

= 414.3 N

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# Homework Help: Determining tension

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