1

### IIT-JEE 1986

MCQ (More than One Correct Answer)
A simple pendulum of length L and mass (bob) M is oscillating in a plane about a vertical line between angular limit $- \phi$ and $+ \phi$. For an angular displacement $\theta$ $\left( {\left| \theta \right| < \phi } \right)$, the tension in the string and the velocity of the bob are T and V respectively. The following relations hold good under the above conditions:
A
$T\cos \theta = Mg$
B
$T - Mg\cos \theta = {{M{V^2}} \over L}$
C
The magnitude of the tangential acceleration of the bob $\left| {{a_T}} \right| = g\sin \theta$
D
$T = Mg\cos \theta$
2

### IIT-JEE 1986

MCQ (More than One Correct Answer)
A reference frame attached to the earth
A
is an inertial frame by definition
B
cannot be an inertial frame because the earth is revolving around the sun
C
is an inertial frame because Newton's laws are applicable in this frame
D
cannot be an inertial frame because the earth rotating about its own axis
3

### IIT-JEE 1982

MCQ (More than One Correct Answer)
In the arrangement shown in Fig. the ends P and Q of an unstretchable string move downwards with uniform speed U. Pulleys A and B are fixed.
Mass M moves upwards with a speed
A
$2U\cos \theta$
B
${U \over {\cos \theta }}$
C
${{2U} \over {\cos \theta }}$
D
$U\cos \theta$

#### Questions Asked from Laws of Motion

On those following papers in MCQ (Multiple Correct Answer)
Number in Brackets after Paper Indicates No. of Questions
JEE Advanced 2019 Paper 2 Offline (1)
keyboard_arrow_right
JEE Advanced 2014 Paper 1 Offline (1)
keyboard_arrow_right
IIT-JEE 1986 (2)
keyboard_arrow_right
IIT-JEE 1982 (1)
keyboard_arrow_right