A particle moves from position r₁ = 3i + 2j -6k to position r₂ = 14i + 13 j+ 9 k
A particle moves from position r₁ = 3i + 2j -6k to position r₂ = 14i + 13 j+ 9 k under the action of force (4 i + j + 3k)N. The work done […]
Motion in Plane
A body of mass m is thrown upwards at an angle θ with the horizontal with velocity
A body of mass m is thrown upwards at an angle θ with the horizontal with velocity v.While rising up the velocity of the mass after t second will be
Options
(a) √(v […]
A soap bubble oscillates with time period T, which in turn depends on the pressure
A soap bubble oscillates with time period T, which in turn depends on the pressure (p), density (?) and surface tension (?).Which of the following correctly represents the expression for T²?
Options
(a) […]
The body of mass m hangs at one end of a string of length l, the other end of which
The body of mass m hangs at one end of a string of length l, the other end of which is fixed.It is given at horizontal velocity, so that the string would just reach where […]
A circular road of radius 1000m has banking angle 45°.The maximum safe speed of a car
A circular road of radius 1000m has banking angle 45°.The maximum safe speed of a car having mass 200 kg will be, if the coefficient of the friction between the tyre and road is 0.5 […]
A projectile is fired at an angle of 45° with the horizontal
A projectile is fired at an angle of 45° with the horizontal. Elevation angle of the projectile at its highest point as seen from the point of projection is
Options
(a) 60° (b) […]
A particle of mass m is projected with velocity v making an angle of 45° with
A particle of mass m is projected with velocity v making an angle of 45° with the horizontal. When the particle lands on the level ground the magnitude of the change in its momentum will […]
A particle starting from the origin (0, 0) moves in a straight line in the (x, y) plane
A particle starting from the origin (0, 0) moves in a straight line in the (x, y) plane. Its coordinates at a later time are (√3,3). The path of the particle makes with the x-axis […]
The angular velocity of second’s hand of a watch is
The angular velocity of second’s hand of a watch is
Options
(a) 0.053 rad/s (b) 0.210 rad/s (c) 0.105 rad/s (d) 0.42 rad/s
Correct Answer:
0.105 rad/s
Explanation:
No explanation available. Be the […]
In a uniform circular motion, work done in one complete rotation is
In a uniform circular motion, work done in one complete rotation is
Options
(a) finite and positive (b) zero (c) infinite (d) finite and negative
Correct Answer:
zero
Explanation:
No explanation available. Be […]