An aicraft executes a horizontal loop of radius 1 km with a speed of 900 kmh⁻¹.Ratio of centripetal acceleration to acceleration due to gravity is
Options
(a) 12.3 (b) 3.3 (c) 6.4 (d) […]
A coin placed on a rotating turn table just slips,if it is placed at a distance of 8 cm from the centre.If angular velocity of the turn table is doubled, it will just slip at […]
A boy whirls a stone in a horizontal circle of radius 1.5 m and at height 2.0 m above level ground.The string breaks and the stone flies off tangentially and strikes the ground after travelling […]
For a particle in a non-uniform accelerated circular motion correct statement is
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(a) velocity is radial and acceleration is transverse (b) velocity is transverse and acceleration is radial only (c) velocity is […]
A stone of mass 1kg is tied to a string 4m long and is rotated at constant speed of 40 ms⁻¹ in a vertical bottom is (take ,g = 10ms⁻² )
Options
(a) […]
A road of width 20m forms an arc of radius 15m, its outer edge is 2m higher than its inner edge.For what velocity the road is banked?
Options
(a) √10 ms⁻¹ (b) √14.7 […]
A stone tied to the end of a string of 1 m long is whirled in a horizontal circle with a constant spped. If the stone makes 22 revolutions in 44 s, what is the […]
A 70 kg man stands in contact against the inner wall of a hollow cylindrical drum of radius 3 m rotating about its vertical axis with 200 rev/min.The coefficient of friction between the wall and […]
A particle of mass 100g tied to a string is rotated along a circle of radius 0.5 m.The breaking tension of string is 10N.The maximum speed with which particle can be rotated without breaking the […]
A heavy small sized sphere is suspended by a string of length l.The sphere rotates uniformly in a horizontal circle with the string making an angle θ with the vertical.Then, the time-period of this conical […]
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