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 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
- cannot be interpreted
The correct answer is:
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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 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 thin rod of length L is placed at angle 
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physics-General
