4:11
The maximum load, a wire can withstand without breaking, when its length is reduced to half of its
MP Alam | Physics for JEE & NEET
1:50
For steel Y = × − 2 10 Nm 11 2. The force required to double the length of a steel wire of area 1 cm
3:05
Longitudinal stress of 1kg mm −2 is applied on a wire. The percentage increase in length is
2:53
The Young’s modulus of a wire is Y, if the energy per unit volume is E, then the strain will be
2:32
When a force is applied at one end of an elastic wire, it produces a strain E in the wire. If Y is t
2:06
Young’s modulus of the material of a wire of length L and radius r is Y Nm−2. If the length is reduc
1:09
The Young’s modulus of a wire is numerically equal to the stress which will
4:27
The graph shows the behaviour of a length of wire in the region for which the substance obeys Hooke’
2:37
A metal block is experiencing an atmospheric pressure of 10 Nm 5 −2. When the same block is placed i
4:28
The increase in length on stretching a wire is 0.05%.If its Poisson’s ratio is 0.4, then its diamete
1:34
An elastic material with Young’s modulus Y is subjected to a tensile stress S, elastic energy stored
3:32
When a metal wire elongates by hanging a load Mg on it, the gravitational potential energy of mass M
2:13
A 5 m long wire is fixed to the ceiling. A weight of10 kg is hang at the lower end and is 1m above t
2:14
If the Young’s modulus of the material is 3 times its modulus of rigidity, then its volume elasticit
A cable that can support a load w is cut into two equal parts. The maximum load that can be supporte
2:07
The longitudinal extension of any elastic material is very small. In order to have an appreciable ch
3:09
Two wires of same diameter of the same material having the length l and 2 l. If the force F is appli
3:30
The temperature of a wire of length 1 m and area ofcross-section1 cm2 is increased from 0°C to 100°C
2:38
The temperature of a wire is doubled. The Young’s modulus of elasticity
2:20
When a pressure of 100 atm is applied on a spherical ball, then its volume reduces to 0.01%. The bul
2:49
Two wires of copper having the length in the ratio4 : 1 and their radii ratio as 1 : 4 are stretched
3:12
The interatomic distance for a metal is 3 10 × −10 m. If the interatomic force constant is 3.6 10 N/
2:44
Young’s modulus of rubber is 10 Nm 4 −2 and area of cross-section is 2 cm2. If force of 2 10× 5 dyne
3:35
A rectangular block of size 10 cm × 8cm × 5cmiskept in three different positions P, Q and R in turna
3:46
A force of 20 N is applied at one end of a wire of length 2mand having area of cross-section 10 cm −
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A load suspended by a massless spring produces an extension of x cm in equilibrium. When it is cut i
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A steel wire of cross-sectional area 3 10 × −6 2 m can withstand a maximum strain of 10 −3. Young’sm
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The load versus elongation graph for four wires of the same material is shown in the figure. Thethic
3:50
Two wires of same material and length but diameter in the ratio 1 : 2 are stretched by the same forc
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A stress of 106 Nm−2 is required for breaking a material. If the density of the material is3 10 kgm
5:26
A cable is replaced by another one of the same length and material but of twice the diameter. The ma
3:02
A uniform steel bar of cross-sectional area A and length L is suspended, so that it hangs vertically
8:18
A thick rope of rubber of length 8 m and density1.5 10 kgm × 3 −3 has Young’s modulus 5 10 Nm × 6 −2
2:45
In the given figure, if the dimensions of the wires are the same and materials are different, Young’
1:38
The stress versus strain graphs for wires of two materials A and B are as shown in the figure. If YA
4:44
An elevator cable is to have a maximum stress of7 10× 7 Nm−2 to allow for appropriate safety factors
The strain-stress curves of three wires of different materials are shown in the figure. P, Q and R a
Figure shows the strain-stress curve for a given material. What are (i) Young’s modulus and (ii) app
5:42
Consider two cylindrical rods of identicald imensions, one of rubber and the other of steel .Both th
The graph shown below gives the extension (DL) of a wire of length 1 m suspended from the top of a r
A brass rod of length 2 m and cross-sectional area2 cm2 is attached end-to-end to a steel rod of len
4:20
One end of a uniform wire of length L and weight w is attached rigidly to a point in roof and a weig
5:19
A rigid bar of mass M is supported symmetrically by three wires each of length L. Those at each end
3:43
One end of a long metallic wire of length L is tied to the ceiling, the other end is tied to a massl
6:13
The length of an elastic string is a metre when thetension is 4 N and b metre when the tension is 5
10:37
A uniform elastic plank moves due to a constant force F placed over a smooth surface. The area ofend
5:43
Two wires of the same material (Young’smodulus =Y) and same length L but radii Rand 2R respectively,
7:16
A mild steel wire of length2L and cross-sectional area A is stretched, well within elastic limit,hor
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