MEDIUM
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Who among the following philosophers is associated with the concept of the 'social contract' which includes constraints on freedom?

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Important Questions on Structure of Atom

EASY

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R

Assertion A : An electric fan continues to rotate for some time after the current is switched off.

Reason R: Fan continues to rotate due to inertia of motion.

In the light of above statements, choose the most appropriate answer from the options given below.

 

EASY
A particle of mass m is moving in a circular path of constant radius r such that its centripetal acceleration ac is varying with time t as ac=k2rt2 , where k is a constant. The power delivered to the particle by the force acting on it is -
EASY
Amongst the following statements, that which was not proposed by Dalton was :
EASY
In the absence of an external opposing force, a body in motion will be in uniform motion forever.
MEDIUM
How do you appreciate Galileo's thought of “any moving body continues in the state only until an external force acts on it” which is in contradiction to Aristotle's belief of “any moving body naturally comes to rest”.
EASY
If the cylinder is compressed under the action of applied forces, the restoring force per unit area is known as _____.
EASY
Which of the following statement is not correct for an object moving along a straight path in an accelerated motion?
EASY
According to Aristotle observation, an external _____ is required to keep a body in uniform motion.
MEDIUM
Block A of weight 100 N rests on a frictionless inclined plane of slope angle 30° as shown in the figure. A flexible cord attached to A passes over a frictionless pulley and is connected to block B of weight W. Find the weight W for which the system is in equilibrium.
Question Image
EASY
Is it necessary to use an external force to retain a body in uniform motion?
HARD
Who was Aristotle? Explain his law of motion.
HARD
According to Aristotle, a ball rolled on the floor comes to rest after some time because _____.
EASY
The internal action and _____ between different parts of a body do, however, sum to zero.
EASY
Name the quantity which is the cause of motion. (velocity/ momentum/ force/ pressure)
EASY
Was Aristotle correct about his statement aristotle's fallacy?
HARD
Explain why Aristotle's law of motion is flawed.