Related Questions

A closely coiled helical spring is acted upon by an axial force. The maximum shear stress developed in the spring is $$\tau $$. The half of the length of the spring if cut off and the remaining spring is acted upon by the same axial force. The maximum shear stress in the spring in new condition will be
A $$\frac{\tau }{2}$$
B $$\tau $$
C $$2\tau $$
D $$4\tau $$
Who said, "A body will remain at rest unless an external force acts on the body"?
A Galileo
B Einstein
C Newton
D Archimedes
একটি কণার উপরে F⇀= 4Ni^ + (2N)j^ - (4N) k^ ধ্রুব বলটি কাজ করার ফলে ধনাত্মক x অক্ষের দিকে কণাটির সরণ হয় 5 m। বলটি দ্বারা কণাটির উপর কৃত কাজের পরিমাণ (A particle movem in positive x direction while being acted upon by a constant force of F⇀= 4Ni^ + (2N)j^ - (4N) k^ The work done on the particle by this force is)
A 20 J
B - 20 J
C 40 J
D -40 J
Stress may be expressed in Newtons
A Per millimetre square (N/mm2)
B Per centimetre square (N/cm2)
C Per metre square (N/m2)
D None of these
The initial tension (in newtons) in a bolt used for making a fluid tight joint like steam engine cover joints, is calculated by the relation (where d = Nominal diameter of bolt in mm)
A 1420 d
B 1680 d
C 2080 d
D 2840 d
Unless you work hard, you will not succeed. Here "Unless" is used as---
A Conjunction
B Interjection
C Preposition
D None
Unless you work hard, you will not succeed. Here, 'Unless' is used as ____ .
A conjunction
B noun
C pronoun
D adjective
Unless you work hard,you will not succeed. Here 'unless' is used as____.
A conjunction
B Noun
C Pronoun
D Adjective
Unless you work hard, you won't pass. Here "Unless" is -----
A Verb
B Preposition
C Conjunction
D Adverb
If a body is acted upon by a number of coplanar non-concurrent forces, it may
A Rotate about itself without moving
B Move in any one direction rotating about itself
C Be completely at rest
D All of these

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