Physics-
General
Easy

Question

A yo-yo is resting on a perfectly rough horizontal table. Forces F1 , F2 and F3 are applied separately as shown. The correct statement is

  1. when F3 is applied the centre of mass will move to the right.    
  2. when F2 is applied the centre of mass will move to the left.    
  3. when F1 is applied the centre of mass will move to the right.    
  4. when F2 is applied the centre of mass will move to the right    

The correct answer is: when F1 is applied the centre of mass will move to the right.

Related Questions to study

General
physics-

A uniform rod of mass M is hinged at its upper end. A particle of mass m moving horizontally strikes the rod at its mid point elastically. If the particle comes to rest after collision find the value of M/m =?

A uniform rod of mass M is hinged at its upper end. A particle of mass m moving horizontally strikes the rod at its mid point elastically. If the particle comes to rest after collision find the value of M/m =?

physics-General
General
physics-

A uniform rod AB of length L and mass M is lying on a smooth table. A small particle of mass m strike the rod with a velocity v0 at point C a distance x from the centre O. The particle comes to rest after collision. The value of x, so that point A of the rod remains stationary just after collision, is :

A uniform rod AB of length L and mass M is lying on a smooth table. A small particle of mass m strike the rod with a velocity v0 at point C a distance x from the centre O. The particle comes to rest after collision. The value of x, so that point A of the rod remains stationary just after collision, is :

physics-General
General
physics-

A uniform rod AB of length L and mass M is lying on a smooth table. A small particle of mass m strike the rod with a velocity v0 at point C at a distance x from the centre O. The particle comes to rest after collision. The value of x, so that point A of the rod remains stationary just after collision is:

A uniform rod AB of length L and mass M is lying on a smooth table. A small particle of mass m strike the rod with a velocity v0 at point C at a distance x from the centre O. The particle comes to rest after collision. The value of x, so that point A of the rod remains stationary just after collision is:

physics-General
parallel
General
physics-

A thin uniform straight rod of mass 2 kg and length 1 m is free to rotate about its upper end when at rest. It receives an impulsive blow of 10 Ns at its lowest point, normal to its length as shown in figure. The kinetic energy of rod just after impact is

A thin uniform straight rod of mass 2 kg and length 1 m is free to rotate about its upper end when at rest. It receives an impulsive blow of 10 Ns at its lowest point, normal to its length as shown in figure. The kinetic energy of rod just after impact is

physics-General
General
physics-

Two equal masses each of mass M are joined by a massless rod of length L. Now an impulse MV is given to the mass M making an angle of 30° with the length of the rod. The angular velocity of the rod just after imparting the impulse is

Two equal masses each of mass M are joined by a massless rod of length L. Now an impulse MV is given to the mass M making an angle of 30° with the length of the rod. The angular velocity of the rod just after imparting the impulse is

physics-General
General
physics-

In the figure shown a ring A is initially rolling without sliding with a velocity v on the horizontal surface of the body B (of same mass as A). All surfaces are smooth. B has no initial velocity. What will be the maximum height reached by A on B.

In the figure shown a ring A is initially rolling without sliding with a velocity v on the horizontal surface of the body B (of same mass as A). All surfaces are smooth. B has no initial velocity. What will be the maximum height reached by A on B.

physics-General
parallel
General
physics-

One ice skater of mass m moves with speed 2v to the right, while another of the same mass m moves with speed v toward the left, as shown in figure I. Their paths are separated by a distance b. At t = 0, when they are both at x = 0, they grasp a pole of length b and negligible mass. For t > 0, consider the system as a rigid body of two masses m separated by distance b, as shown in figure II. Which of the following is the correct formula for the motion after t = 0 of the skater initially at y = b/2?
i) 
ii) 

One ice skater of mass m moves with speed 2v to the right, while another of the same mass m moves with speed v toward the left, as shown in figure I. Their paths are separated by a distance b. At t = 0, when they are both at x = 0, they grasp a pole of length b and negligible mass. For t > 0, consider the system as a rigid body of two masses m separated by distance b, as shown in figure II. Which of the following is the correct formula for the motion after t = 0 of the skater initially at y = b/2?
i) 
ii) 

physics-General
General
physics-

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 vertically by a constant force F (< Mg) 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 spool is pulled vertically by a constant force F (< Mg) as shown in figure The friction force can be given by which of the following diagrams

physics-General
General
physics-

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

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

physics-General
parallel
General
physics-

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

physics-General
General
physics-

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

physics-General
General
physics-

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

physics-General
parallel
General
physics-

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

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

physics-General
General
physics-

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.

physics-General
General
physics-

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 fraction numerator v subscript 0 end subscript over denominator r omega subscript 0 end subscript end fraction is

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 fraction numerator v subscript 0 end subscript over denominator r omega subscript 0 end subscript end fraction is

physics-General
parallel

card img

With Turito Academy.

card img

With Turito Foundation.

card img

Get an Expert Advice From Turito.

Turito Academy

card img

With Turito Academy.

Test Prep

card img

With Turito Foundation.