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Physics

Mechanics

Easy

Question

$A space p a r t i c l e space m o v e s space w i t h space c o n s tan t space a n g u l a r space v e l o c i t y space i n space a space c i r c l e. space D u r i n g space t h e space m o t i o n space i t s$

$E n e r g y i s c o n s e r v e d$
$M o m e n t u m i s c o n s e r v e d$
$E n e r g y a n d m o m e n t u m b o t h a r e c o n s e r v e d$
$N o n e o f t h e a b o v e i s c o n s e r v e d$

The correct answer is: $E n e r g y space i s space c o n s e r v e d$

$I n space u n i f o r m space c i r c u l a r space m o t i o n space left parenthesis c o n s tan t space a n g u l a r space v e l o c i t y right parenthesis space k i n e t i c space e n e r g y space r e m a i n s space c o n s tan t space b u t space d u e space t o space c h a n g e space i n space v e l o c i t y space o f space p a r t i c l e space i t s space m o m e n t u m space v a r i e s.$

Related Questions to study

$A space c a r space m o v i n g space o n space a space h o r i z o n t a l space r o a d space m a y space b e space t h r o w n space o u t space o f space t h e space r o a d space i n space t a k i n g space a space t u r n$

$A space c a r space m o v i n g space o n space a space h o r i z o n t a l space r o a d space m a y space b e space t h r o w n space o u t space o f space t h e space r o a d space i n space t a k i n g space a space t u r n$

PhysicsMechanics

$A space m o t o r space c y c l i s t space g o i n g space r o u n d space i n space a space c i r c u l a r space t r a c k space a t space c o n s tan t space s p e e d space h a s$

$A space m o t o r space c y c l i s t space g o i n g space r o u n d space i n space a space c i r c u l a r space t r a c k space a t space c o n s tan t space s p e e d space h a s$

PhysicsMechanics

$B o d y space i s space m o v i n g space i n space a space c i r c u l a r space p a t h space w i t h space a space c o n s tan t space s p e e d. space I t space h a s space$

$B o d y space i s space m o v i n g space i n space a space c i r c u l a r space p a t h space w i t h space a space c o n s tan t space s p e e d. space I t space h a s space$

PhysicsMechanics

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$A space s t o n e space o f space m a s s space 2 m v sin space left parenthesis 90 right parenthesis equals 2 m v space i s space t i e d space t o space a space s t r i n g space o f space l e n g t h$ $omega equals v over r equals 100 over 100 equals 1 rad divided by straight s$ $a n d space r o t a t e d space i n space a space c i r c l e space w i t h space a space c o n s tan t space s p e e d space$ $alpha equals fraction numerator d omega over denominator d t end fraction equals 0$ . $I f space t h e space s t r i n g space i s space r e l e a s e d comma space t h e space s t o n e space f l i e s.$

$A space s t o n e space o f space m a s s space 2 m v sin space left parenthesis 90 right parenthesis equals 2 m v space i s space t i e d space t o space a space s t r i n g space o f space l e n g t h$ $omega equals v over r equals 100 over 100 equals 1 rad divided by straight s$ $a n d space r o t a t e d space i n space a space c i r c l e space w i t h space a space c o n s tan t space s p e e d space$ $alpha equals fraction numerator d omega over denominator d t end fraction equals 0$ . $I f space t h e space s t r i n g space i s space r e l e a s e d comma space t h e space s t o n e space f l i e s.$

PhysicsMechanics

$I f space a space p a r t i c l e space m o v e s space i n space a space c i r c l e space d e s c r i b i n g space e q u a l space a n g l e s space i n space e q u a l space t i m e s comma space i t s space v e l o c i t y space v e c t o r space$

$I f space a space p a r t i c l e space m o v e s space i n space a space c i r c l e space d e s c r i b i n g space e q u a l space a n g l e s space i n space e q u a l space t i m e s comma space i t s space v e l o c i t y space v e c t o r space$

PhysicsMechanics

$A space b o d y space o f space m a s s space n pi D space i s space m o v i n g space i n space a space c i r c l e space o f space r a d i u s space rightwards double arrow 2000 pi D equals 9500 space w i t h space a space c o n s tan t space s p e e d space D equals fraction numerator 9500 over denominator 2000 cross times pi end fraction equals 1.5 straight m. space$ $T h e space f o r c e space o n space t h e space b o d y space i s space space a n d space i s space d i r e c t e d space t o w a r d s space t h e space c e n t r e. space space W h a t space i s space t h e space w o r k space d o n e space b y space t h i s space f o r c e space i n space m o v i n g space t h e space b o d y space o v e r space h a l f space t h e space c i r c u m f e r e n c e space o f space t h e space 7 c i r c l e$

$A space b o d y space o f space m a s s space n pi D space i s space m o v i n g space i n space a space c i r c l e space o f space r a d i u s space rightwards double arrow 2000 pi D equals 9500 space w i t h space a space c o n s tan t space s p e e d space D equals fraction numerator 9500 over denominator 2000 cross times pi end fraction equals 1.5 straight m. space$ $T h e space f o r c e space o n space t h e space b o d y space i s space space a n d space i s space d i r e c t e d space t o w a r d s space t h e space c e n t r e. space space W h a t space i s space t h e space w o r k space d o n e space b y space t h i s space f o r c e space i n space m o v i n g space t h e space b o d y space o v e r space h a l f space t h e space c i r c u m f e r e n c e space o f space t h e space 7 c i r c l e$

PhysicsMechanics

parallel

$A space c y c l i s t space t u r n s space a r o u n d space a space c u r v e space a t space 15 space m i l e s divided by h o u r. space I f space h e space t u r n s space a t space d o u b l e space t h e space s p e e d comma space t h e space t e n d e n c y space t o space o v e r t u r n space i s$

$A space c y c l i s t space t u r n s space a r o u n d space a space c u r v e space a t space 15 space m i l e s divided by h o u r. space I f space h e space t u r n s space a t space d o u b l e space t h e space s p e e d comma space t h e space t e n d e n c y space t o space o v e r t u r n space i s$

PhysicsMechanics

A lens always forms a virtual, upright, and diminished image of an object placed in front of it. It is a ____ lens.

A lens always forms a virtual, upright, and diminished image of an object placed in front of it. It is a ____ lens.

What kind of images does a convex lens not form?

What kind of images does a convex lens not form?

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The lens of a pair of spectacles used by a person is thinner in the middle and thicker towards the edges. The lens used in the spectacles is ____.

The lens of a pair of spectacles used by a person is thinner in the middle and thicker towards the edges. The lens used in the spectacles is ____.

A concave lens forms a virtual, upright, and diminished image of an object ____.

A concave lens forms a virtual, upright, and diminished image of an object ____.

A lens can only form a virtual, upright, and diminished images irrespective of the distance between the lens and the object. It is a ____ lens.

A lens can only form a virtual, upright, and diminished images irrespective of the distance between the lens and the object. It is a ____ lens.

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In the setup shown in the picture below, the sun rays are focused on a paper by a magnifying glass, which results in the paper catching fire. If the magnifying glass was replaced by a concave lens, the paper does not catch fire. Why?

In the setup shown in the picture below, the sun rays are focused on a paper by a magnifying glass, which results in the paper catching fire. If the magnifying glass was replaced by a concave lens, the paper does not catch fire. Why?

The angle between the incident ray and the emergent ray is not equal to ____ degrees when the light gets refracted through a spherical lens.

The angle between the incident ray and the emergent ray is not equal to ____ degrees when the light gets refracted through a spherical lens.

Concave lenses are also called ____ lenses.

Concave lenses are also called ____ lenses.

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