Physics-
General
Easy
Question
In the following problems, indicate the correct direction of friction force acting on the cylinder, which is pulled on a rough surface by a constant force F A spool is pulled horizontally by a constant force F below the centre of mass. The friction force can be given by which of the following diagrams
- cannot be interpreted
The correct answer is:
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In the following problems, indicate the correct direction of friction force acting on the cylinder, which is pulled on a rough surface by a constant force F A cylinder is placed on a rough plank which in turn is placed on a smooth surface. The plank is pulled with a constant force F. The friction force can be given by which of the following diagrams
In the following problems, indicate the correct direction of friction force acting on the cylinder, which is pulled on a rough surface by a constant force F A cylinder is placed on a rough plank which in turn is placed on a smooth surface. The plank is pulled with a constant force F. The friction force can be given by which of the following diagrams
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In the following problems, indicate the correct direction of friction force acting on the cylinder, which is pulled on a rough surface by a constant force F A cylinder is pulled horizontally by a force F acting at a point above the centre of mass of the cylinder, as shown in figure. The friction force can be given by which of the following diagrams
In the following problems, indicate the correct direction of friction force acting on the cylinder, which is pulled on a rough surface by a constant force F A cylinder is pulled horizontally by a force F acting at a point above the centre of mass of the cylinder, as shown in figure. The friction force can be given by which of the following diagrams
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In the following problems, indicate the correct direction of friction force acting on the cylinder, which is pulled on a rough surface by a constant force F A cylinder is pulled horizontally by a force F acting at a point below the centre of mass of the cylinder, as shown in figure. The friction force can be given by which of the following diagrams
In the following problems, indicate the correct direction of friction force acting on the cylinder, which is pulled on a rough surface by a constant force F A cylinder is pulled horizontally by a force F acting at a point below the centre of mass of the cylinder, as shown in figure. The friction force can be given by which of the following diagrams
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In the following problems, indicate the correct direction of friction force acting on the cylinder, which is pulled on a rough surface by a constant force F A cylinder of mass M and radius R is pulled horizontally by a force F. The friction force can be given by which of the following diagrams
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A ball rolls down an inclined plane, figure. The ball is first released from rest from P and then later from Q. Which of the following statement is/ are correct?
i) The ball takes twice as much time to roll from Q to O as it does to roll from P to O.
ii) The acceleration of the ball at Q is twice as large as the acceleration at P.
iii) The ball has twice as much K.E. at O when rolling from Q as it does when rolling from P.
A ball rolls down an inclined plane, figure. The ball is first released from rest from P and then later from Q. Which of the following statement is/ are correct?
i) The ball takes twice as much time to roll from Q to O as it does to roll from P to O.
ii) The acceleration of the ball at Q is twice as large as the acceleration at P.
iii) The ball has twice as much K.E. at O when rolling from Q as it does when rolling from P.
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A uniform circular disc placed on a rough horizontal surface has initially a velocity v0 and an angular velocity w0 as shown in the figure. The disc comes to rest after moving some distance in the direction of motion. Then 
is
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A body kept on a smooth horizontal surface is pulled by a constant horizontal force applied at the top point of the body. If the body rolls purely on the surface, its shape can be :
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A sphere of mass M and radius R is attached by a light rod of length l to a point P. The sphere rolls without slipping on a circular track as shown. It is released from the horizontal position. the angular momentum of the system about P when the rod becomes vertical is :
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A uniform sphere of radius R is placed on a rough horizontal surface and given a linear velocity v0 angular velocity 
as shown. The sphere comes to rest after moving some distance to the right. It follows that:
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A time varying force F = 2t is applied on a spool rolling as shown in figure. The angular momentum of the spool at time t about bottommost point is:
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A plank with a uniform sphere placed on it rests on a smooth horizontal plane. Plank is pulled to right by a constant force F. If sphere does not slip over the plank. Which of the following is incorrect.
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A plank of mass M is placed over smooth inclined plane and a sphere is also placed over the plank. Friction is sufficient between sphere and plank. If plank and sphere are released from rest, the frictional force on sphere is:
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Portion AB of the wedge shown in figure is rough and BC is smooth. A solid cylinder rolls without slipping from A to B. The ratio of translational kinetic energy to rotational kinetic energy, when the cylinder reaches point C is :
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Inner and outer radii of a spool are r and R respectively. A thread is wound over its inner surface and placed over a rough horizontal surface. Thread is pulled by a force F as shown in fig. then in case of pure rolling
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