# An object moves at a constant speed along a circular path in a horizontal XY plane, with the center at the origin. When the object is at x=−2m, its velocity is −(4m/s)ˆj. What is the object's acceleration when it is y=2m

−(8m/s2)

−(8m/s2)

−(4m/s2)ˆj

(4m/s2)ˆi

## The correct Answer is:A

## r=2m,v=4m/s

a=v2r=162=8m/s2

when y = 2m, a=(−8m/s2)ˆj

because acceleration is directed towards centre.

### Similar Questions

Does the velocity of an object moving with a uniform speed along a circular path change ?

02:44View SolutionA particle is moving a circular path in xy-plane. When it crosses x-axis, it has an acceleration along the path of 1.5 m//s^(2) , and is moving with a speed of 10 m/s in -ve y - direction. The total accelration is

View SolutionAn object moves at a constant speed along a circular path in a horizontal xy plane with the centre at the origin. When the object is at x=-2m its velocity is 4m/sˆj . what is the object's acceleration when it is y=2m

02:58View SolutionAn object moves at constant speed along a cicular path in a horizontal xy plane. With the centre as origin.when the object is at x= -2m , it s velocity is −4ˆjm/s , its acceleration when it is at y= 2 m/s

03:30View Solutionजब कोई वस्तु वृत्ताकार पथ पर गति करती है तो उसमें वेग परिवर्तन के कारण उत्पन्न त्वरण कहलाता है-

01:46View SolutionAn object performs motion with constant speed along a circular path, then it is said that its velocity is constant (uniform).

02:05View SolutionIf an object moving on a circular path of radius just completes a circle, find its velocity when the cord is horizontal.

02:25View Solutionm અને 2m દળ ધરાવતા બે પથ્થર સમક્ષિતિજ વર્તુળાકાર માર્ગ પર ગતિ કરે છે. ભારે પદાર્થના વર્તુળાકાર માર્ગની ત્રિજ્યા r2 અને હલકા પદાર્થના વર્તુળાકાર માર્ગની ત્રિજ્યા r છે અને હલકા પદાર્થની ઝડપ તેના ભારે પદાર્થ કરતા n ગણી છે. જો કેન્દ્રગામી બળ સમાન હોય, તો n ની કિંમત ....... .

02:37View Solution