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A particle moving with velocity is acted by three forces shown by the vector triangle . The velocity of the particle will
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Important Questions on Laws of Motion
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A metallic rod of mass per unit length is lying horizontally on a smooth inclined plane which makes an angle with the horizontal. The rod is not allowed to slide down by flowing a current through it when a magnetic field of induction is acting on it in the vertical direction. The current flowing in the rod to keep it stationary is
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Which one of the following statements is incorrect?
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A block of mass m is placed on a smooth inclined wedge of inclination as shown in the figure. The wedge is given an acceleration towards the right. The relation between and for the block to remain stationary on the wedge is
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Two blocks and of masses and respectively are connected by a massless and inextensible string. The whole system is suspended by a massless spring as shown in figure. The magnitudes of acceleration of and immediately after the string is cut, are respectively
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A rigid ball of mass, strikes a rigid wall at and gets reflected without any loss of speed as shown in the figure below. The value of impulse imparted by the wall on the ball will be
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A car is negotiating a curved road of radius . The road is banked at an angle . The coefficient of friction between the tyres of the car and the road is . The maximum safe velocity on this road is:
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Three blocks A, B and C, of masses and respectively, are in contact on a frictionless surface, as shown. If a force of is applied on the block, then the contact force between A and B is:
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A block of mass rests on a horizontal table. A light string connected to it passes over a frictionless pulley at the edge of table and from its other end another block of mass is suspended. The coefficient of kinetic friction between the block and the table is . When the block is sliding on the table, the tension in string is:
