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Quiz 51
Mdcat-past-papers Quiz
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1001. Every particle of a rotating disc moves with:
Constant linear velocity
Constant angular velocity
Constant tangential velocity
Constant linear displacement
1002. A body is moving with constant speed. With radius of circle 'r' and time period 'T' the centripetal acceleration is given by:
α = 2πr/T
α = 4π²r/T²
α = 4π²r/T²
α = 4π²r²/T
1003. Which of the following results in production of centripetal acceleration in the body?
Change in velocity magnitude
Change in mass
Change in force magnitude
Change in direction of velocity
1004. The centripetal force in terms of angular velocity is given by:
Fc = mrω
Fc = mrω²
Fc = mrα
Fc = mrα
1005. Which one of the following provides centripetal force in a circular motion of the body?
Vertical component of weight
Horizontal component of weight
Weight of the body
Force of friction
1006. At what angle the curved path should be banked if a car is moving with a speed of 12m/s at a radius 36m?
10°
15°
20°
22°
1007. Which one of the following provides centripetal force in a circular motion of the body?
Vertical component of weight
Horizontal component of weight
Weight of the body
Force of friction
1008. When angular speed of a body is doubled, the centripetal acceleration becomes:
Doubled
Thrice
Four times
Remains the same
1009. The radial acceleration is also considered as:
Angular acceleration
Centripetal acceleration
Tangential acceleration
Translatory acceleration
1010. Centripetal force =
mv/2r
mv²/r
mv/r
mv²/r
1011. In a rotating spaceship, to produce artificial gravity, what does the centripetal force do?
Has no effect inside the spaceship
Pulls object towards the centre
Increases spaceship's rotation
Pushes the objects towards outer wall
1012. When the mass of a body moving along a circle becomes half and radius becomes double and v is constant, the centripetal force becomes:
Double
One-fourth
Half
Remains Same
1013. If during circular motion, tangential velocity of a body becomes double, the centripetal force:
same
double
four times
eight times
1014. Centripetal force is directed towards:
Center of circle
Perpendicular to circle
Tangent of circle
Along the circular path
1015. A car turning around a circular path, centripetal force is given by:
Gravity
Friction
Both
None of these
1016. In motion of satellites, necessary centripetal force is provided by:
Gravitational force
Coulomb's force
Magnetic force
Nuclear force
1017. A 10N force moves a body around a circular path of radius 50cm. What is work done in completing one revolution?
5J
Zero
31.42J
500J
1018. If we double both the speed and radius of circular path the centripetal force will be:
Same
Double
Four times
Eight times
1019. When an object experiences circular motion, the direction of centripetal acceleration is:
Towards center
Along the tangent
Along the direction of motion
Opposite the direction of motion
1020. The minimum required velocity to put a satellite into the orbit is called:
Terminal velocity
Escape velocity
Critical velocity
Average velocity
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