Part 1
Which of the following is true for center of mass ? (i) The center of mass of a body may lie within , outside , on the surface of the body. (ii) In the case of symmetrical bodies , the center of mass coincides with the geometrical center of the body. (iii) In the absence of external forces , the center of mass moves with constant velocity. (iv) If external forces are absent and system is initially at rest, then location of center of mass is fixed.
22
Oct
Which of the following is true for center of mass ? (i) The center of mass of a body may lie within , outside , on the surface of the body. (ii) In the case of symmetrical bodies , the center of mass coincides with the geometrical center of the body. (iii) In the absence [...]
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on the surface of the body. (ii) In the case of symmetrical bodies ,
outside ,
the center of mass coincides with the geometrical center of the body. (iii) In the absence of external forces ,
the center of mass moves with constant velocity. (iv) If external forces are absent and system is initially at rest ,
then location of center of mass is fixed. ,
Which of the following is true for center of mass ? (i) The center of mass of a body may lie within ,
A rod of length is 3m and its mass per unit length is directly proportional to distance x from one end the centre of gravity of the rod from that end will be at
22
Oct
A rod of length is 3m and its mass per unit length is directly proportional to distance x from one end the centre of gravity of the rod from that end will be at A rod of length is 3m and its mass per unit length is directly proportional to distance x from one end [...]
A bucket tied at the end of a 1.6m long string is whirled in a vertical circle with constant speed. What should be the minimum speed so that the water from the bucket does not spill, when the bucket is at the highest position (Take g=10m/s^2)
22
Oct
A bucket tied at the end of a 1.6m long string is whirled in a vertical circle with constant speed. What should be the minimum speed so that the water from the bucket does not spill, when the bucket is at the highest position (Take g=10m/s^2) A bucket tied at the end of a 1.6m [...]
Consider a car moving on a horizontal road, convex bridge and concave bridge of same radius R. The speed of the car in each situation is same and equal to v, the mass of the car is m, then
22
Oct
Consider a car moving on a horizontal road, convex bridge and concave bridge of same radius R. The speed of the car in each situation is same and equal to v, the mass of the car is m, then Consider a car moving on a horizontal road convex bridge and concave bridge of same radius [...]
A motorcycle is going on an over bridge of radius R. The driver maintains a constant speed. As the motorcycle is ascending on the over bridge, the normal force on it
22
Oct
A motorcycle is going on an over bridge of radius R. The driver maintains a constant speed. As the motorcycle is ascending on the over bridge, the normal force on it A motorcycle is going on an over bridge of radius R. The driver maintains a constant speed. As the motorcycle is ascending on the [...]
A bridge is in the form of a semicircle of radius 40m. The greatest speed with which a motorcycle can cross the bridge without leaving the ground at the highest point (frictional force is negligibly small)
22
Oct
A bridge is in the form of a semicircle of radius 40m. The greatest speed with which a motorcycle can cross the bridge without leaving the ground at the highest point (frictional force is negligibly small) A block is released on a smooth track from A. The minimum value of h so that the block [...]
A small disc is on the top of a hemisphere of radius R. What is the smallest horizontal velocity v that should be given to the disc for it to leave the hemisphere and not slide down it?[There is no friction]
22
Oct
A small disc is on the top of a hemisphere of radius R. What is the smallest horizontal velocity v that should be given to the disc for it to leave the hemisphere and not slide down it?[There is no friction] A block is released on a smooth track from A. The minimum value of [...]
A Particle is kept at rest at the top of a sphere of diameter 42 m. when disturbed slightly, it slides down. At what height h from the bottom, the particle will leave the sphere.
22
Oct
A Particle is kept at rest at the top of a sphere of diameter 42 m. when disturbed slightly, it slides down. At what height h from the bottom, the particle will leave the sphere. A Particle is kept at rest at the top of a sphere of diameter 42 m. when disturbed slightly it [...]
A particle is released from the top of the smooth hemisphere R as shown. the normal contact between the particle and the hemisphere in position θ is
22
Oct
A particle is released from the top of the smooth hemisphere R as shown. the normal contact between the particle and the hemisphere in position θ is A particle is released from the top of the smooth hemisphere R as shown. the normal contact between the particle and the hemisphere in position θ is October [...]
A block is released on a smooth track from A. The minimum value of h so that the block will complete the loop is
22
Oct
A block is released on a smooth track from A. The minimum value of h so that the block will complete the loop is A block is released on a smooth track from A. The minimum value of h so that the block will complete the loop is October 22, 2020 Category: Cengage NEET by [...]