JEE Main 2016 (Online) 10th April Morning Slot | Simple Harmonic Motion Question 84 | Physics

JEE Main 2016 (Online) 10th April Morning Slot

MCQ (Single Correct Answer)

-1

In an engine the piston undergoes vertical simple harmonic motion with amplitude 7 cm. A washer rests on top of the piston and moves with it. The motor speed is slowly increased. The frequency of the piston at which the washer no longer stays in contact with the piston, is close to :

0.1 Hz

1.2 Hz

0.7 Hz

1.9 Hz

JEE Main 2016 (Online) 9th April Morning Slot

MCQ (Single Correct Answer)

-1

Two particles are performing simple harmonic motion in a straight line about the same equilibrium point. The amplitude and time period for both particles are same and equal to A and I, respectively. At time t = 0 one particle has displacement A while the other one has displacement $${{ - A} \over 2}$$ and they are moving towards each other. If they cross each other at time t, then t is :

$${T \over 6}$$

$${5T \over 6}$$

$${T \over 3}$$

$${T \over 4}$$

JEE Main 2016 (Offline)

MCQ (Single Correct Answer)

-1

A particle performs simple harmonic motion with amplitude $$A.$$ Its speed is trebled at the instant that it is at a distance $${{2A} \over 3}$$ from equilibrium position. The new amplitude of the motion is:

$$A\sqrt 3 $$

$${{7A} \over 3}$$

$${A \over 3}\sqrt {41} $$

$$3A$$

JEE Main 2015 (Offline)

MCQ (Single Correct Answer)

-1

A pendulum made of a uniform wire of cross sectional area $$A$$ has time period $$T.$$ When an additional mass $$M$$ is added to its bob, the time period changes to $${T_{M.}}$$ If the Young's modulus of the material of the wire is $$Y$$ then $${1 \over Y}$$ is equal to :
($$g=$$ $$gravitational$$ $$acceleration$$)

$$\left[ {1 - {{\left( {{{{T_M}} \over T}} \right)}^2}} \right]{A \over {Mg}}$$

$$\left[ {1 - {{\left( {{T \over {{T_M}}}} \right)}^2}} \right]{A \over {Mg}}$$

$$\left[ {{{\left( {{{{T_M}} \over T}} \right)}^2} - 1} \right]{A \over {Mg}}$$

$$\left[ {{{\left( {{{{T_M}} \over T}} \right)}^2} - 1} \right]{{Mg} \over A}$$

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