Thus, the velocity of the point of the rim which is momentarily in contact with a flat surface is zero. Assertion: The moment of inertia of a hoop is more than the moment of inertia of the disc of same mass and radius. To ensure that the risks relating to the childs specific health care need. Since, there is no displacement in the direction of applied force, work done is zero. 997 What is the S. unit of angular momentum? First we need to find the standard deviation of the market and the portfolio. 75 J. C. 100 J. D. 200 J. A 10-kilogram body is constrained to move along the x-axis long. F = 20N; s = 20m; = 600. The moment of inertia depends on the redistribution of mass about the rotational axis. The mass of the second body is. 982 A ball rolls on a smooth table without slipping. 958 The work done by kinetic friction.
Let at height 'h' K. 1 gets reduced to half i. e, K. 2 = K. 1/2. P2 = 2m E. p(mE)1/2. The work done by a force acting on a body is as shown in the graph. At what points do the two balls collide? Direction sign {--} is present on the top of AB, AC, AD, AE, AF and 6AO). Q=A ball of mass 20 g hits a wall at an angle of 45o with a velocity of 15 m/ the ball rebound at 90o to the direction of incidence, calculate the impulse received by the ball. A 10-kilogram body is constrained to move along the x-axis and vertical. A particle of mass m moves with constant speed v on a circular path of radius r. Find the magnitude of average force on it in half revolution. Why is pulling a lawn roller easier than pushing it? 992 What do you mean by conservation of linear momentum? A man falls on a cemented floor and a man falls on a heap of sand who will get more hurt & why? 911 A planet moving around the Sun is a good illustration of.
The ratio of their linear momenta is: A. The tension in the coupling is 2000 N. So, the power spent on the tractor is. 250 m. C. 1250 m. D. 2500 m. K. = 1250J; m=1kg; g = 10m/s2. C. law of conservation of energy. 927 A vector, is perpendicular to a vector,, then the value of 'm' is. When m1 < m2 and m2 at rest, there will be maximum transfer of momentum. 20 J. C. 8 J. D. 5 J. m = 0.
63 g. C. 45 g. D. 30 g. P = 106 kW= 106 103 J/s; Time = 24hours= (24 3600)s; c = 3108m/s. A Spring Of Force Constant k is cut into two pieces, such that one piece is doubled the lengthof other. A. straight line motion. 955 If momentum of a body increases by 50%, its kinetic energy will increase by.
The power supplied by the motor (in watts) is. Find acceleration of mass and tension on the string. This gravitational force is conservative in nature and the work done by the conservative force in moving the body around the closed path is always zero. The mass of elementary part 'dx' will be. In figure (b) the car is tilted but as the vertical line through the centre of gravity is inside the case of the car and so the car will fall back to the level again. Work is the dot product of the applied force and displacement produced in a body. Doubtnut is not responsible for any discrepancies concerning the duplicity of content over those questions. M1 =2 kg; u2 = 0; v1 =u1 /3. A 10-kilogram body is constrained to move along the x-axis 2022. Find tension t1 and t2. To conserve the angular momentum, the angular speed of the turning table increases. Course Hero uses AI to attempt to automatically extract content from documents to surface to you and others so you can study better, e. g., in search results, to enrich docs, and more.
So, the S. unit of energy is N-m, which is known as joule(J). 905 The work done when an application of force produces acceleration in a body. However, the velocity of the particle keeps on changing in uniform circular motion; so, its momentum also varies. 916 The mass of a pendulum bob is 100 g and the length of its string is 1 m. The bob is held such that the string is horizontal and is then allowed to fall. So, k = (100N)/10-2m. D. can be positive or zero. The fraction of its total energy associated with rotation is. 987 A solid cylinder rolls down an inclined plane. D. Both assertion and reason are true but reason is not the correct explanation of the assertion. 974 Read the assertion and reason carefully to mark the correct option out of the options given below. Area of trapezium OABC. 984 A ring of radius r and mass m rotates about an axis passing through its center and perpendicular to its plane with angular momentum. 5 are when necessary material is left out of the conclusion or inference SLIDE.
When the same force stretches them. State the triangle law of vector addition and the parallelogram law of addition of vectors. 2 J. C. 4 J. D. 8 J. m= 2kg; v = 2m/s. 923 If the magnitude of two vectors, are 2 and 3 respectively and the magnitude of their product is 3, then the angle between the vectors is. 977 The acceleration of a solid cylinder rolling down an inclined plane of inclination 300 is. D. equal to the earth's gravitational force. 921 A stone falls from a height of 10 m on a hard horizontal surface. Friction is a force(F) that always acts opposite to the displacement(s). 1 m. If the height of the inclined plane is 4 m, its rotational kinetic energy when it reaches the foot of the plane is: A. Assertion and reason both are false. D. does not shift horizontally. What is the net work done by the gas'A gas... A single conservative force F(x) acts on a 2. The man starts moving on the platform with a velocity Vr relative to the platform. Work = force x displacement.
When a body tied to a string is rotated, the force and displacement always remain perpendicular to each other and so, = 900. 16 inversion The reversal of the normal order of words in a sentence to achieve. It rebounds to nearly 50% of its original height then the collision is. 7. the frictional force on the block is?? C. When m1 = m2 and m2 at rest, there will be maximum transfer of K. E. D. When collision is oblique and m2 at rest with m1 = m2, after collisions the ball moves in opposite direction. B. is always negative. P increases times on doubling the kinetic energy. Its displacement in time, t is proportional to. 952 The S. I. unit of energy is. Text Books Software Testing and Quality Assurance theory and practice. A block A of mass4 kg is placed on another block B of mass 5kg B rests on smooth table for sliding block A onB a horizontal force of 12 N is required to be applied on A how much max force can be applied on Bso that both A andB move together. 917 A force displaces a body and the graph obtained is shown below. 980 A sphere is rotating about a diameter.
The force is in newton and x is in metres. D. scalar product of force and displacement. 906 Which one of the following statements does hold good when two balls of masses m1 and m2 undergo elastic collision? When the amount of work done is 300 J and change in internal energy is 100J, then the heat supplied... A bar magnet of magnetic moment 104 J/T is free to rotate in a horizontal plane. Then the range of the second fragment formed (R2) at the highest will be three times the range of the first fragment (R1)). 2. two masses of 7kg and 12kg r connectd at two end of light inextinsible string that goes over frictionless pulley. 968 A ball is dropped from a height of 1m. Total work done in 80 beats, W = PV 80. Thus, maximum transfer of K. E. takes place in this case. C. can be both positive and negative.
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