Answer:Weight is the result of gravity . The gravitational field strength of Earth is 10 N/kg (ten newtons per kilogram). This means an object with a mass of 1 kg would be attracted towards the centre of Earth by a force of 10 N. We feel forces like this as weight.
Explanation:
Answer:
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Explanation:
Answer:
All the given option is false.
Explanation:
A)
This is not true for all the materials like composite because the Poisson ratio for composite material can be negative that is why positive tensile stress may produce positive lateral strain.
B)
This is not true for all the material because the Poisson ratio for some material can be positive that is why positive tensile stress may produce negative lateral strain.
C)
The explanation is same as option A.
D)
This is not true for all the materials ,It is valid only up to elastic limit .After the elastic limit the strain and stress does not follow linear path.
E)
This is not true for all the materials because some materials like composite is having negative value of Young's modulus.
Therefore all the given option is false.
Answer:
B = 1.029 N
Explanation:
Whenever an object is submerged into water, the water exerts a force on an object in the upward direction. When an object push water, water pushes it back with more force. Basically buoyant force is the weight of fluid displaced by the object submerged in water.
B = weight of object in air - weight of object in water
Converting gram into N
We know that 1 kg = 9.8 N
Changing kg into gram by multiplying both sides with 1x10¯³
1 g = 9.8x10¯³ N
430 g = 430x9.8x10¯³N
430 g = 4.214 N
325 g = 325x9. 8x10¯³ N
325 g = 3.185 N
Now, finding buoyant force
B = weight of object in air - weight of object in water
B = 4.214 - 3.185
B = 1.029 N
