A. mV/r2
B. mV/r
C. mV2/r
D. mV2/r2
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Related Mcqs:
- If a car moves with a uniform speed of 2 ms-1 in a circle of radius 0.4. Its angular speed is______________?
A. 4 rad. S-1
B. 5 rad. S-1
C. 1.6 rad. S-1
D. 2.8 ms-1 - When a body is whirled in a horizontal circle by means of a string the centripetal force is supplied by______________?
A. Mass of a body
B. Velocity of body
C. The tension in the string
D. Centripetal acceleration - hen a body moves in a circle, the angle between its linear velocity and angular velocity is always_______________?
WA. 180°
B. 0°
C. 90°
D. 45° - A particle of mass m charge q and speed V enters a uniform magnetic radius r. The radius r of the circle is_________________?
A. independent mass m
B. directly proportional to m
C. directly proportional to q
D. directly proportional to B - The centripetal acceleration produced in a rotating body is commonly due to change on_________of body?
A. magnitude
B. direction
C. both
D. None of theseSubmitted by: Bareera Mahmood
- An object travels at constant speed around a circle of radius 1.0 m in 2.0 seconds. What is the magnitude of its acceleration?
A. 0
B. π2
C. 2 π2
D. 4 π2Submitted by: Tauseef Ali
- The direction of the linear velocity of a body moving in a circle is______________?
A. along the axis of rotation
B. along the tangent
C. directed towards the centre
D. directed away from the centre - Centripetal force performs_______________?
A. Maximum work
B. Minimum work
C. Negative work
D. No work - When a wheel 1 m in diameter makes 30 rev min the linear speed of the point on its rim in ms-1 is_______________?
A. 2π
B. π/2
C. π
D. 20π - A ball of mass 0.2 kg is thrown vertically upwards by applying a force by hand. If the hand moves 0.2 m while applying the force and the ball goes up to 2 in height further, find the magnitude of the force. Consider g = 10m/s 2
A. 22N
B. 16N
C. 20N
D. 4NSubmitted by: Huzaifa Naseer
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