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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 20131 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 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 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 1 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 1 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 1 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 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 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 20131 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