A wheel is subjected to uniform angular acceleration about its axis with its angular velocity is zero . In the first two seconds , it rotates through

Question

A wheel is subjected to uniform angular acceleration about its axis with its angular velocity is zero . In the first two seconds , it rotates through

A wheel is subjected to uniform angular acceleration about its axis with its angular velocity is zero . In the first two seconds , it rotates through an angle `theta _(1)` and in the next two seconds , it rotates through an angle `theta _(2)` then the ratio of `theta_(2)//theta_(1)`
A. `1:1`
B. `2:1`
C. `3:1`
D. `4:1`

Monjur Alahi

4 views

2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

Correct Answer - C
`theta _(1)=omega_(0)t+(1)/(2)alphat_(1)^(2)" "thereforetheta_(1)=2alpha `
`theta_(2)=omega_(0)t+(1)/(2)alpha t_(2)^(2)" "thereforetheta_(2)=8alpha`
`theta_(2)=theta_(2)-theta_(1)=8lpha-2alpha" "therefore (theta_(2))/(theta_(1))=(3)/(1)`

4 views Answered 2023-02-05 15:29