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A ball of mass (m) 0.5 kg is attached to the end of a string having length (L) 0.5 m. The ball is rotated on a horizontal circular path about vertical axis. The maximum tension that the string can bear is 324 N. The maximum possible value of angular velocity of ball (in radian/s) is - jee main 2012 physics 1 AnswerA metallic rod of length ‘A’ is tied to a string of length 2A and made to rotate with angular speed ω on a horizontal table with one end of the string fixed. If there is a vertical magnetic field ‘B’ in the region, the e.m.f. induced across the ends of the rod is : - physics 20130 AnswerA hockey ball of mass 200 g travelling at 10 ms-1 is struck by a hockey stick so as to return it along its original path with a velocity at 5 ms-1. Calculate the change of momentum occurred in the motion of the hockey ball by the force applied by the hockey stick. - Physics Cbse class 11 1 AnswerA batsman hits a cricket ball which then rolls on a level ground. After covering a short distance, the ball comes to rest. The ball slows to a stop because - Physics Cbse class 11 1 AnswerThe diameter of a metallic ball is 4.2cm. What is the mass of the ball, if the density of the metal is 8.9 g per cm3? CBSE class 9 mathematics1 AnswerA batsman hits back a ball straight in the direction of the bowler without changing its initial speed of 12 m/s. If the mass of ball is 0.15 kg. Determine impulse imparted. -Physics Cbse class 11 0 AnswerA batsman hits back a ball straight in the direction of the bowler without changing its initial speed of 12 m/s. If the mass of ball is 0.15 kg. Determine impulse imparted. -Physics Cbse class 11 0 AnswerFind (a) the velocity with which it was thrown up, (b) the maximum height it reaches, and (c) its position after 4 s. - Physics Cbse class 11 1 Answer Calculate (i) the maximum height to which it rises, (ii) the total time it takes to return to the surface of the Earth. - Physics Cbse class 11 1 Answer Calculate (i) the maximum height to which it rises, (ii) the total time it takes to return to the surface of the Earth. - Physics Cbse class 11 0 AnswerA ball is gently dropped from a height of 20 m. If its velocity increases uniformly at the rate of 10 ms-2, with what velocity will it strike the ground? After what time will it strike the ground? - Physics Cbse class 11 1 AnswerBox 1 contains 15 balls out of which 3 are red. Box 2 contains 12 balls out of which 4 are red. If one ball is drawn at random from each box simultaneously, the probability of getting at least one red ball is. GATE- Agricultural En1 AnswerDefine track ball. CBSE CLASS VI -20181 AnswerRead the extract given below and answer the questions that follow. CBSE English1 AnswerA hoop of radius r and mass m rotating with an angular velocity ω0 is placed on a rough horizontal surface. The initial velocity of the centre of the hoop is zero. What will be the velocity of the centre of the hoop when it ceases to slip ? - physics 20130 AnswerA box contains 20 balls bearing numbers 1, 2, 3, 4, ..., 20. A ball is drawn at random from the box. What is the probability that the number on the ball is CBSE Mathematics1 AnswerA bag contains 15 white and some black balls. If the probability of drawing a black ball from the bag is thrice that of drawing a white ball, find the number of black balls in the bag. Mathematics CBSE class 10 20171 AnswerWhy does a sheet of paper fall slower than one that is crumpled into a ball? - Physics Cbse class 11 1 AnswerCost of a dozen pens is Rs 180 and cost of 8 ball pens is Rs 56. Find the ratio of the cost of a pen to the cost of a ball pen.-Mathematics-cbse-std 6th-Ratio and Proportion1 AnswerIn the following example, try to identify the number of times the velocity of the ball changes: "A football player kicks a football to another player of his team who kicks the football towards the goal. The goalkeeper of the opposite team collects the football and kicks it towards a player of his own team". Also identify the agent supplying the force in each case - Physics Cbse class 11 1 Answer