Home
Class 12
PHYSICS
A wheel is subjected to uniform angular ...

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)`

Text Solution

Verified by Experts

The correct Answer is:
61
`theta=omega_(0)t+1/2 alpha t^(2), therefore omega_(0)=0 therefore theta_(0)=1/2 alpha (2)^(2)=2alpha and theta_(2)=1/2 alpha (4)^(2)-theta_(1)`
`rArr theta_(2)=8 alpha -2alpha =6alpha therefore theta_(2)/theta_(1)=(6alpha)/(2alpha)=3`
Promotional Banner

Similar Questions

Explore conceptually related problems

A wheel is subjected to uniform angualr acceleration about its axis. Initially, its angualr velocity is zero. In the first 2 sec , it rotates through an angle theta_(1) , in the next 2 sec , it rotates through an angle theta_(2) . The ratio of theta_(2)//theta_(1) is

A car wheel is rotated to uniform angular acceleration about its axis. Initially its angular velocity is zero. It rotates through an angle theta_(1) in the first 2 s. In the next 2 s, it rotates through an additional angle theta_(2) , the ratio of (theta_(2))/(theta_(1)) is

A car wheel is rotated to uniform angular acceleration about its axis, intially its angular velocity is zero .It rotates through an angle theta_1 in the first 2 s , in the next 2 s, it rotates through an additional angle theta_2 ,the ratio of theta_2/theta_1 is

A wheel of a vehicle is rotated to a uniform angular acceleration about its axis. Initially its angular velocity is zero. It rotates through an angle theta_1 in the first 2 s and in the next 3 s, it rotates through an additional angle theta_2 . The ratio of theta_2/theta_1 is

A disc initially at rest , is rotated about its axis with uniform angular acceleration . In the first 2 s, it rotates an angle theta . In the next 2s, the disc rotates through an angle

When mirror is rotated through an angle theta , a reflected ray from it moves through an angle of

A wheel initially at rest, is rotated with a uniform angular acceleration. The wheel rotates through an angle theta_(1) in the first one second and through an additional angle theta_(2) in the next one second. The ratio theta_(1)//theta_(2) is:

A wheel initially at rest, is rotated with a uniform angular acceleration. The wheel rotates through an angle theta_(1) in first one second and through an additional angle theta_(2) in the next one second. The ratio theta_(2)//theta_(1) is :

When a plane mirror is rotated through an angle theta then the reflected ray turns through the angle 2 theta then the size of the image