Kathy Williams

2022-01-06

A 200 g block on a 50-cm-long string swings in a circle on a horizontal, frictionless table at 75 rpm.

a. What is the speed of the block? b. What is the tension in the string?

a. What is the speed of the block? b. What is the tension in the string?

peterpan7117i

Beginner2022-01-07Added 39 answers

Given:

$r=50cm=0.5m$

$m=200g=0.2kg$

$\omega =75r\pm$

a)Firstly, convert all units in SI

$\omega =75r\pm$

$\omega =75\frac{2\pi rad}{60s}$

$\omega =75\frac{2\times 3.14rad}{60s}$

$=7.85\frac{rad}{s}$

Find the speed from the equation

$v=r\omega$

$v=0.5m\times 7.85\frac{rad}{s}$

$v=3.925\frac{m}{s}$

b)According to the Newtons

a)Firstly, convert all units in SI

Find the speed from the equation

b)According to the Newtons

abonirali59

Beginner2022-01-08Added 35 answers

If you want only the answers:

a)$v=3.925\frac{m}{s}$

b)$T=6.16225N$

a)

b)

22+64

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