A stone of mass 1 kg tied to a light inexensible string of length L=10/3 is whirling in a circular path of radius L in vertical plane.If the ratio of the maximum tension to the […]
A national roadway bridge over a canal is in the form of an arc of a circle of radius 49 m.What is the maximum speed with which a car can move without leaving the ground […]
A car is moving in a circular horizontal track of radius 10.0 m with a constant speed of 10.0 ms⁻¹.A plumb bob is suspended from the roof of the car by a light rigid rod […]
A particle is kept at rest at the top of a sphere of diameter 42m.When disturbed slightly, it slides down.At what height h from the bottom, the particle will leave the sphere?
Options
A 1kg stone at the end of 1m long string is whirled in a vertical circle at constant speed of 4 m/s.The tension in the string is 6N, when the stone at (take,g=10 m/s²).
A stone is tied to a string of length l and whirled in a vertical circle with the other end of the string as the centre.At a certain instant of time,the stone is at its […]
A particle is moving with a uniform velocity along a straight line path. A force is not required to
Options
(a) increase its speed (b) decrease the momemtum (c) change the direction (d) […]
A cricketer catches a ball of mass 150 g in 0.1 sec moving with speed 20 m/s. Then he experiences force of
Options
(a) 30 N (b) 3 N (c) 0.3 N (d) […]
The apparent weight of the body of mass 10 kg when it is travelling upwards with an acceleration of 2 m/s² will be
Options
(a) 118 N (b) 198 N (c) 164 N […]
A body of mass m=3.513 kg is moving along the x-axis with a speed of 5 m/s. The magnitude of its momentum is recorded as
Options
(a) 17.57 kg m/s (b) 17.6 kg […]
2017 Copyright Doctor Dreams Training Academy