Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions)
A wheel of radius R has an axle of radius R/5. A force F is applied tangentially to the wheel. To keep the system in a state of “rotational” rest, a force F’ is applied tangentially to the axle. The value of F’ is
26
Sep
A wheel of radius R has an axle of radius R/5. A force F is applied tangentially to the wheel. To keep the system in a state of “rotational” rest, a force F’ is applied tangentially to the axle. The value of F’ is a force F' is applied tangentially to the axle. The value [...]
A sphere is placed rotating with its centre initially at rest in a corner as shown in Figs.(a) and (b). Coefficient of friction between all surfaces and the sphere is 1/3. Find the ratio of the friction forces fa/fb by ground in situations (a) and (b).
26
Sep
A sphere is placed rotating with its centre initially at rest in a corner as shown in Figs.(a) and (b). Coefficient of friction between all surfaces and the sphere is 1/3. Find the ratio of the friction forces fa/fb by ground in situations (a) and (b). Find the minimum height of the obstacle so that [...]
Find the minimum height of the obstacle so that the sphere can stay in equilibrium.
26
Sep
Find the minimum height of the obstacle so that the sphere can stay in equilibrium. Find the minimum height of the obstacle so that the sphere can stay in equilibrium. September 26, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,
End A of the bar AB in figure rests on a frictionless horizontal surface and end B is hinged A horizontal force F of magnitude 120 N is exerted on end A. you can ignore the weight of the bar. What is the net force exerted by the bar on the hinge at B?
26
Sep
End A of the bar AB in figure rests on a frictionless horizontal surface and end B is hinged A horizontal force F of magnitude 120 N is exerted on end A. you can ignore the weight of the bar. What is the net force exerted by the bar on the hinge at B? [...]
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A rod of length L is held vertically on a smooth horizontal surface. The top end of the rod is given a gentle push. At at certain instant of time ,
when the rod makes an angle 37∘ with horizontal the velocity of COM of the rod of 2 m/s. The velocity of the end of the rod in contact with the surface at that instant is ,
A string is wrapped around a cylinder of mass M and radius R. The string is pulled vertically upwards to prevent the centre of mass from falling as the cylinder unwinds the string. The tension in the string is
26
Sep
A string is wrapped around a cylinder of mass M and radius R. The string is pulled vertically upwards to prevent the centre of mass from falling as the cylinder unwinds the string. The tension in the string is A rod of length L is held vertically on a smooth horizontal surface. The top end [...]
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A rod of length L is held vertically on a smooth horizontal surface. The top end of the rod is given a gentle push. At at certain instant of time ,
when the rod makes an angle 37∘ with horizontal the velocity of COM of the rod of 2 m/s. The velocity of the end of the rod in contact with the surface at that instant is ,
Three children are sitting on a see-saw in such a way that is balances. A 20 kg and a 30 kg boy are on opposite sides at a distance of 2m from the pivot. It the third boy jumps off, thereby destroying balance, then the initial angular acceleration of the board is: (Neglect weight of board)
26
Sep
Three children are sitting on a see-saw in such a way that is balances. A 20 kg and a 30 kg boy are on opposite sides at a distance of 2m from the pivot. It the third boy jumps off, thereby destroying balance, then the initial angular acceleration of the board is: (Neglect weight of [...]
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then the initial angular acceleration of the board is: (Neglect weight of board) ,
thereby destroying balance ,
Three children are sitting on a see-saw in such a way that is balances. A 20 kg and a 30 kg boy are on opposite sides at a distance of 2m from the pivot. It the third boy jumps off ,
Calculate the force F that is applied horizontally at the axle of the wheel which is necessary to raise the wheel over the obstacle of height 0.4 m. Radius of wheel is 1 m and mass = 10 kg . F is
26
Sep
Calculate the force F that is applied horizontally at the axle of the wheel which is necessary to raise the wheel over the obstacle of height 0.4 m. Radius of wheel is 1 m and mass = 10 kg . F is Calculate the force F that is applied horizontally at the axle of the [...]
A uniform triangular plate ABCof moment of mass m and inertia I (about an axis passing through A and perpendicular to plane of the plate) can rotate freely in the vertical plane about point ‘A’ as shown in figure. The plate is released from the position shown in the figure. Line AB is horizontal. The acceleration of centre of mass just after the release of plate is
26
Sep
A uniform triangular plate ABCof moment of mass m and inertia I (about an axis passing through A and perpendicular to plane of the plate) can rotate freely in the vertical plane about point ‘A’ as shown in figure. The plate is released from the position shown in the figure. Line AB is horizontal. The [...]
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A rod of length L is held vertically on a smooth horizontal surface. The top end of the rod is given a gentle push. At at certain instant of time ,
when the rod makes an angle 37∘ with horizontal the velocity of COM of the rod of 2 m/s. The velocity of the end of the rod in contact with the surface at that instant is ,
Two identical uniform discs of mass m and radius r are arranged as shown in the figure. If α is the angular acceleration of the lower disc and a cm is acceleration of centre of mass of the lower disc, then relation among a cm , α and r is
26
Sep
Two identical uniform discs of mass m and radius r are arranged as shown in the figure. If α is the angular acceleration of the lower disc and a cm is acceleration of centre of mass of the lower disc, then relation among a cm , α and r is A rod of length [...]
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A rod of length L is held vertically on a smooth horizontal surface. The top end of the rod is given a gentle push. At at certain instant of time ,
when the rod makes an angle 37∘ with horizontal the velocity of COM of the rod of 2 m/s. The velocity of the end of the rod in contact with the surface at that instant is ,
Figure shows an arrangement of masses hanging from a ceiling. In equilibrium, each rod is horizontal, has negligible mass and extends three times as far to the right of the wire supporting it as to the left. If mass m4 is 48 kg then mass m1 is equal to
26
Sep
Figure shows an arrangement of masses hanging from a ceiling. In equilibrium, each rod is horizontal, has negligible mass and extends three times as far to the right of the wire supporting it as to the left. If mass m4 is 48 kg then mass m1 is equal to each rod is horizontal Figure shows [...]