Physics-
General
Easy
Question
A sphere is placed rotating with its centre initially at rest in a corner as shown in figure (A) & (B). Coefficient of friction between all surfaces and the sphere is 
. Find the ratio of the frictional force 
by ground in situations (A) & (B).
- 1
- none
The correct answer is: 1
Related Questions to study
physics-
For the pivoted slender rod of length l as shown in figure, the angular velocity as the bar reaches the vertical position after being released in the horizontal position is
For the pivoted slender rod of length l as shown in figure, the angular velocity as the bar reaches the vertical position after being released in the horizontal position is
physics-General
physics-
A non uniform rod OA of linear mass density 
= const.) is suspended from ceiling with hinge joint O & light string as shown in figure. Find the angular acceleration of rod just after the string is cut.
A non uniform rod OA of linear mass density = const.) is suspended from ceiling with hinge joint O & light string as shown in figure. Find the angular acceleration of rod just after the string is cut.
physics-General
physics-
A rod hinged at one end is released from the horizontal position as shown in the figure. When it becomes vertical its lower half separates without exerting any reaction at the breaking point. Then the maximum angle ‘q’ made by the hinged upper half with the vertical is :
A rod hinged at one end is released from the horizontal position as shown in the figure. When it becomes vertical its lower half separates without exerting any reaction at the breaking point. Then the maximum angle ‘q’ made by the hinged upper half with the vertical is :
physics-General
physics-
A pulley is hinged at the centre and a massless thread is wrapped around it. The thread is pulled with a constant force F starting from rest. As the time increases,
A pulley is hinged at the centre and a massless thread is wrapped around it. The thread is pulled with a constant force F starting from rest. As the time increases,
physics-General
physics-
Two light vertical springs with equal natural lengths and spring constants k1 and k2 are separated by a distance l. Their upper ends are fixed to the ceiling and their lower ends to the ends A and B of a light horizontal rod AB. A vertical downwards force F is applied at point C on the rod. AB will remain horizontal in equilibrium if the distance AC is
Two light vertical springs with equal natural lengths and spring constants k1 and k2 are separated by a distance l. Their upper ends are fixed to the ceiling and their lower ends to the ends A and B of a light horizontal rod AB. A vertical downwards force F is applied at point C on the rod. AB will remain horizontal in equilibrium if the distance AC is
physics-General
physics-
The spool shown in figure is placed on rough horizontal surface and has inner radius r and outer radius R. The angle q between the applied force and the horizontal can be varied. The critical angle (
) for which the spool does not roll and remains stationary is given by
The spool shown in figure is placed on rough horizontal surface and has inner radius r and outer radius R. The angle q between the applied force and the horizontal can be varied. The critical angle () for which the spool does not roll and remains stationary is given by
physics-General
physics-
A uniform rod of length L and weight W is suspended horizontally by two vertical ropes as shown. The first rope is attached to the left end of the rod while the second rope is attached a distance L 4 from the right end. The tension in the second rope is
A uniform rod of length L and weight W is suspended horizontally by two vertical ropes as shown. The first rope is attached to the left end of the rod while the second rope is attached a distance L 4 from the right end. The tension in the second rope is
physics-General
Physics-
A uniform cylinder rests on a cart as shown. The coefficient of static friction between the cylinder and the cart is 0.5. If the cylinder is 4 cm in diameter and 10 cm in height, which of the following is the minimum acceleration of the cart needed to cause the cylinder to tip over?
A uniform cylinder rests on a cart as shown. The coefficient of static friction between the cylinder and the cart is 0.5. If the cylinder is 4 cm in diameter and 10 cm in height, which of the following is the minimum acceleration of the cart needed to cause the cylinder to tip over?
Physics-General
physics-
A uniform ladder of length 5m is placed against the wall as shown in the figure. If coefficient of friction m is the same for both the walls, what is the minimum value of 
for it not to slip?
A uniform ladder of length 5m is placed against the wall as shown in the figure. If coefficient of friction m is the same for both the walls, what is the minimum value of for it not to slip?
physics-General
physics-
A smooth rod of length 
is kept inside a trolley at an angle as shown in the figure. What should be the acceleration a of the trolley so that the rod remains in equilibrium with respect to it?
A smooth rod of length is kept inside a trolley at an angle as shown in the figure. What should be the acceleration a of the trolley so that the rod remains in equilibrium with respect to it?
physics-General
physics-
Find minimum height of obstacle so that the sphere can stay in equilibrium.
Find minimum height of obstacle so that the sphere can stay in equilibrium.
physics-General
physics-
A homogeneous cubical brick lies motionless on a rough inclined surface. The half of the brick which applies greater pressure on the plane is :
A homogeneous cubical brick lies motionless on a rough inclined surface. The half of the brick which applies greater pressure on the plane is :
physics-General
physics-
A uniform cube of side ‘b’ and mass M rest on a rough horizontal table. A horizontal force F is applied normal to one of the face at a point, at a height 3b/4 above the base. What should be the coefficient of friction (m) between cube and table so that is will tip about an edge before it starts slipping?
A uniform cube of side ‘b’ and mass M rest on a rough horizontal table. A horizontal force F is applied normal to one of the face at a point, at a height 3b/4 above the base. What should be the coefficient of friction (m) between cube and table so that is will tip about an edge before it starts slipping?
physics-General
physics-
In an experiment with a beam balance on unknown mass m is balanced by two known mass m is balanced by two known masses of 16 kg and 4 kg as shown in figure. The value of the unknown mass m is
In an experiment with a beam balance on unknown mass m is balanced by two known mass m is balanced by two known masses of 16 kg and 4 kg as shown in figure. The value of the unknown mass m is
physics-General
physics-
A right triangular plate ABC of mass m is free to rotate in the vertical plane about a fixed horizontal axis through A. It is supported by a string such that the side AB is horizontal. The reaction at the support A is:
A right triangular plate ABC of mass m is free to rotate in the vertical plane about a fixed horizontal axis through A. It is supported by a string such that the side AB is horizontal. The reaction at the support A is:
physics-General
