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A block of mass m lying on a horizontal surface (coefficient of static friction = μs) is to be brought into motion by a pulling force F. At what angle θ with the horizontal should the force F be applied so that its magnitude is minimum? Also find this minimum magnitude.
29
Aug
A block of mass m lying on a horizontal surface (coefficient of static friction = μs) is to be brought into motion by a pulling force F. At what angle θ with the horizontal should the force F be applied so that its magnitude is minimum? Also find this minimum magnitude. The friction coefficient between [...]
The friction coefficient between the board and the floor shown in figure (6-E7) is μ. Find the maximum force that the man can exert on the rope so that the board does not slip on the floor.
29
Aug
The friction coefficient between the board and the floor shown in figure (6-E7) is μ. Find the maximum force that the man can exert on the rope so that the board does not slip on the floor. The friction coefficient between the board and the floor shown in figure (6-E7) is μ. Find the maximum [...]
Two wires are made of the same material and have the same volume. The first wire has cross-sectional area A and second wire has cross-sectional area 3A. If the length of first wire increased by Δl on applying force F, how much force is needed to stretch second wire by the same amount?
29
Aug
Two wires are made of the same material and have the same volume. The first wire has cross-sectional area A and second wire has cross-sectional area 3A. If the length of first wire increased by Δl on applying force F, how much force is needed to stretch second wire by the same amount? the length [...]
Block A weighs 4 N and block weigh 8 N The coefficient of kinetic friction is 0.25 for all surface find the force F to slide B at a constant speed when (a)A rest on B and moves with it (b) A is held at rest and (c )A and B are connected by a light cord passing over a smooth putting as shown in fig 7.31 (a – c) restively.
29
Aug
Block A weighs 4 N and block weigh 8 N The coefficient of kinetic friction is 0.25 for all surface find the force F to slide B at a constant speed when (a)A rest on B and moves with it (b) A is held at rest and (c )A and B are connected by a [...]
A copper rod of 88 cm and an aluminium rod of unknown length have their increase in length independent of increase in temperature. The length of aluminium rod is :
29
Aug
A copper rod of 88 cm and an aluminium rod of unknown length have their increase in length independent of increase in temperature. The length of aluminium rod is : A copper rod of 88 cm and an aluminium rod of unknown length have their increase in length independent of increase in temperature. The length [...]
When a block of mass M is suspended by a long wire of length L, the length of the wire becomes (L+l). The elastic potential energy stored in the extended wire is
29
Aug
When a block of mass M is suspended by a long wire of length L, the length of the wire becomes (L+l). The elastic potential energy stored in the extended wire is the length of the wire becomes (L+l). The elastic potential energy stored in the extended wire is When a block of mass M [...]
A block of mass m is supported on a rough wall by applying a force in figure Coefficient of static friction between block and wall is mu For what range of value of p , the block remain in static equilibrium ?
29
Aug
A block of mass m is supported on a rough wall by applying a force in figure Coefficient of static friction between block and wall is mu For what range of value of p , the block remain in static equilibrium ? A block of mass m is supported on a rough wall by applying [...]
The following four wires are made of the same material. Which of these will have the largest extension when the same tension is applied?
29
Aug
The following four wires are made of the same material. Which of these will have the largest extension when the same tension is applied? The following four wires are made of the same material. Which of these will have the largest extension when the same tension is applied? August 29, 2020 Category: Chapter 14 - [...]
Determine the magnitude of frictional force and acceleration of the block in each of the following cases:
29
Aug
Determine the magnitude of frictional force and acceleration of the block in each of the following cases: Determine the magnitude of frictional force and acceleration of the block in each of the following cases: August 29, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,
Copper of fixed volume ‘V’ is drawn into wire of length ‘l’. When this wire is subjected to a constant force ‘F’, the extension produced in the wire is ′Δl′. Which of the following graph is a straight line?
29
Aug
Copper of fixed volume ‘V’ is drawn into wire of length ‘l’. When this wire is subjected to a constant force ‘F’, the extension produced in the wire is ′Δl′. Which of the following graph is a straight line? Copper of fixed volume 'V' is drawn into wire of length 'l'. When this wire is [...]