NEET 2017 | Laws of Motion Question 15 | Physics

NEET 2017

MCQ (Single Correct Answer)

-1

One end of string of length $$l$$ is connected to a particle of mass 'm' and the other end is connected to a small peg on a smooth horizontal table. If the particle moves in circle with speed '$$\upsilon $$', the net force on the particle (directed towards centre) will be (T represents the tension in the string)

$$T + {{m{v^2}} \over l}$$

$$T - {{m{v^2}} \over l}$$

zero

$$T$$

NEET 2017

MCQ (Single Correct Answer)

-1

Two blocks A and B of masses 3m and m respectively are connected by a massless and inextensible string. The whole system is suspended by a massless spring as shown in figure. The magnitudes of acceleration of A and B immediately after the string is cut, are respectively

NEET 2017 Physics - Laws of Motion Question 25 English

NEET 2017 Physics - Laws of Motion Question 25 English

$${g \over 3},g$$

$$g, g$$

$${g \over 3},{g \over 3}$$

$$g,{g \over 3}$$

NEET 2016 Phase 1

MCQ (Single Correct Answer)

-1

A car is negotiating a curved road of radius R. The road is banked at an angle $$\theta $$. The coefficient of friction between the tyres of the car and the road is $$\mu $$_s. The maximum safe velocity on this road is

$$\sqrt {{g \over R}{{{\mu _s} + \tan \theta } \over {1 - {\mu _s}\tan \theta }}} $$

$$\sqrt {{g \over {{R^2}}}{{{\mu _s} + \tan \theta } \over {1 - {\mu _s}\tan \theta }}} $$

$$\sqrt {g{R^2}{{{\mu _s} + \tan \theta } \over {1 - {\mu _s}\tan \theta }}} $$

$$\sqrt {gR{{{\mu _s} + \tan \theta } \over {1 - {\mu _s}\tan \theta }}} $$

AIPMT 2015

MCQ (Single Correct Answer)

-1

Two stones of masses m and 2m are whirled in horizontal circles, the heavier one in a radius $${r \over 2}$$ and the lighter one in radius r. The tangential speed of lighter stone is n times that of the value of heavier stone when they exprience same centripetal forces. The value of n is

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