Two bodies of masses m₁ and m₂ and having velocities v₁ and v₂ respectively , moving along a straight line are brought to rest by equal resistances forces.If one moves twice as that of the […]
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 […]
A force acts on a 3.0 g particle in such a way that the position of the particle as a function of time is given by x = 3t – 4t² + t³ , where […]
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
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(a) √(v […]
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?
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(a) […]
A boat which has a speed of 5 kmh⁻¹ in still water crosses river of width 1 km along the shortest path in 15 min.The width of the river in kmh⁻¹ is
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Suppose the kinetic energy of a body oscillating with amplitude A and at a distance x is given by KE = Bx / x² + A². The dimensions of B are the same as that […]
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 […]
For a satellite escape velocity is 11 kms⁻¹.If the satellite is launched at an angle of 60°with the vertical, then escape velocity will be
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(a) 11 kms⁻¹ (b) 11√3 kms⁻¹ (c) 11 / […]
A particle moves along the x-axis such that its co-ordinate (x) varies with time (t), according to the expression x = 2- 5t + 6t², where x is in metre and t is in second.The […]
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