Consider a wire of length l
Two parallel and opposite forces, each of magnitude 4000 N, are applied tangentially to the upper and lower faces of a cubical metal block 25 cm on a side. Find the angle of shear and the displacement of the upper surface relative to the lower surface. The shear modulus for the metal is 80 GPa.
10
Oct
Two parallel and opposite forces, each of magnitude 4000 N, are applied tangentially to the upper and lower faces of a cubical metal block 25 cm on a side. Find the angle of shear and the displacement of the upper surface relative to the lower surface. The shear modulus for the metal is 80 GPa. [...]
Two Steel wires of the same length but radii r and 2 r are connected together end to end and tied to a wall as shown. The force stretches the combination by 10 mm. How far does the midpoint A move? (in mm)
10
Oct
Two Steel wires of the same length but radii r and 2 r are connected together end to end and tied to a wall as shown. The force stretches the combination by 10 mm. How far does the midpoint A move? (in mm) Consider a wire of length l cross sectional area A and Young's [...]
The bar shown in the figure is made of a single piece of material. It is fixed at one end. It consists of two segments of equal lengh L/2 each but different cross sectional area A and 2A. Find the ratio of total elongation in the bar to the elongation produced in thicker segment under the action of an axial force F. Consider the shape of the joint to remain circular. (Given :Y is Young’s modulus.
10
Oct
The bar shown in the figure is made of a single piece of material. It is fixed at one end. It consists of two segments of equal lengh L/2 each but different cross sectional area A and 2A. Find the ratio of total elongation in the bar to the elongation produced in thicker segment under [...]
A ring of radius r made of wire of density ρ is rotated about a stationary vertical axis passing through its centre and perpendicular to the plane of the ring as shown in the figure. Determine the angular velocity (in rad/s) of ring at which the ring breaks. The wire breaks at tensile stress σ. Ignore gravity. Take σ/ρ = 4 and r = 1 m.
10
Oct
A ring of radius r made of wire of density ρ is rotated about a stationary vertical axis passing through its centre and perpendicular to the plane of the ring as shown in the figure. Determine the angular velocity (in rad/s) of ring at which the ring breaks. The wire breaks at tensile stress σ. [...]
Consider a wire of length L, cross sectional area A and Young’s modulus Y and match column I with column II:
10
Oct
Consider a wire of length L, cross sectional area A and Young’s modulus Y and match column I with column II: Consider a wire of length l cross sectional area A and Young's modulus Y and match column I with column II: October 10, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP [...]
Consider a wire of length l, area of cross section A, and resistivity ρ with resistance 10Ω. Its length is increased by applying a force, and it becomes four times of its original value. Find the changed resistance of the wire.
02
Sep
Consider a wire of length l, area of cross section A, and resistivity ρ with resistance 10Ω. Its length is increased by applying a force, and it becomes four times of its original value. Find the changed resistance of the wire. and it becomes four times of its original value. Find the changed resistance of [...]