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Physics

Mechanics

Easy

Question

$A space c a r space m o v e s space o n space a space c i r c u l a r space r o a d. space space I t space d e s c r i b e s space e q u a l space a n g l e s space a b o u t space t h e space c e n t r e space i n space e q u a l space i n t e r v a l s space o f space t i m e. space W h i c h space o f space t h e space f o l l o w i n g space s t a t e m e n t space a b o u t space t h e space v e l o c i t y space o f space t h e space c a r space i s space t r u e$

Magnitude of velocity is not constant
Both magnitude and direction of velocity change
Velocity is directed towards the centre of the circle
Magnitude of velocity is constant but direction changes

The correct answer is: Magnitude of velocity is constant but direction changes

As body covers equal angle in equal time intervals. its angular velocity and hence magnitude of linear velocity is constant.

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PhysicsMechanics

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Two bodies of mass 10 kg and 5 kg moving in concentric orbits of radii $8 pi m rightwards arrow over short leftwards arrow divided by rightwards arrow over short leftwards arrow s squared$ and $equals 4 pi squared n squared r equals 4 pi squared open parentheses 1 half close parentheses squared cross times 4 equals 4 pi squared$ such that their periods are the same. Then the ratio between their centripetal acceleration is

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PhysicsMechanics

$What space is space the space value space of space linear space velocity comma if space space g equals 10 ms to the power of negative 2 end exponent space a n d space square root of 21$

$What space is space the space value space of space linear space velocity comma if space space g equals 10 ms to the power of negative 2 end exponent space a n d space square root of 21$

PhysicsMechanics

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