Related Questions

Whenever some external system of forces acts on a body, it undergoes some deformation. As the body undergoes some deformation, it sets up some resistance to the deformation. This resistance per unit area to deformation, is called
A Strain
B Stress
C Pressure
D Modulus of elasticity
When a body in equilibrium undergoes an infinitely small displacement, work imagined to be done, is known as
A Imaginary work
B Negative work
C Virtual work
D None of these
The change in length due to a tensile or compressive force acting on a body is given by (where P = Tensile or compressive force acting on the body, $$l$$ = Original length of the body, A = Cross-sectional area of the body and E = Young's modulus for the material of the body)
A $$\frac{{{\text{P}}l{\text{A}}}}{{\text{E}}}$$
B $$\frac{{{\text{P}}l}}{{{\text{AE}}}}$$
C $$\frac{{\text{E}}}{{{\text{P}}l{\text{A}}}}$$
D $$\frac{{{\text{AE}}}}{{{\text{P}}l}}$$
Who said, "A body will remain at rest unless an external force acts on the body"?
A Galileo
B Einstein
C Newton
D Archimedes
40 N এর একটি বল 8 kg ভরের একটি স্থির বস্তুর উপর ক্রিয়া করে। 4 sec পর যদি ঘলের ক্রিয়া বন্ধ হয়ে যায় তবে প্রথম থেকে 9 sec এ বস্তুটি কত দূরত্ব অতিক্রম করবে? ( A force of 40 N acts on a fixed object of mass 8 kg. If the action of force stops after 4 sec, what distance will the object travel in 9 see from the beginning?)
A 120 m
B 150 m
C 110 m
D 130 m
E 140 m
If a body floating in a liquid occupies a new position and remains at rest in this new position, when given a small angular displacement, the body is said to be in __________ equilibrium.
A Neutral
B Stable
C Unstable
D None of these
If a body floating in a liquid returns back to its original position, when given a small angular displacement, the body is said to be in
A Neutral equilibrium
B Stable equilibrium
C Unstable equilibrium
D None of these
Choose the word which best completes the following sentence - 'Whenever I eat shellfish, I get _____ all over my body.'
A bruises
B a rash
C rash
D warts
If ‘P’ is the force acting on the body, ‘m’ is the mass of the body and ‘a’ is the acceleration of the body, then according to Newton's second law of motion,
A P + ma = 0
B P - ma = 0
C P × ma = 0
D $$\frac{{\text{P}}}{{{\text{ma}}}} = 0$$
The principle of transmissibility of forces states that, when a force acts upon a body, its effect is
A Same at every point on its line of action
B Different at different points on its line of action
C Minimum, if it acts at the center of gravity of the body
D Maximum, if it acts at the center of gravity of the body

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