Laws of Motion

JEE Main 2024 (Online) 27th January Morning ShiftMCQEasy📈 Topic in 21% papers+4−1

Ques. 1JEE Main 2024, 27 January (Morning Shift)

A train is moving with a speed of 12 m/s on rails which are 1.5 m apart. To negotiate a curve of radius 400 m, the height by which the outer rail should be raised with respect to the inner rail is (Given, g=10 m/s2) :

6.0 cm
5.4 cm
4.8 cm
4.2 cm

Answer

(2) 5.4 cm

Solution

[figure]

Banking without side thrust: = v2rg

is small, = hd

h= v2drg= 122 1.5400 10

=0.054 m=5.4 cm

Answer: (2)

Keep practising — Laws of Motion

Ques. 2JEE Main 2024, 27 January (Morning Shift)

A body of mass 1000 kg is moving horizontally with a velocity 6 m/s. If 200 kg extra mass is added, the final velocity (in m/s) is:

Ques. 3JEE Main 2024, 27 January (Evening Shift)

Given below are two statements : In the light of the above statements, choose the most appropriate answer from the options given below :

Statement I is incorrect but Statement II is correct
Both Statement I and Statement II are correct
Both Statement I and Statement II are incorrect
Statement I is correct but Statement II is incorrect

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