1
NEET 2017
MCQ (Single Correct Answer)
+4
-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](https://neetcare-image.cdn.examgoal.net/7khtfk4ga65lm/eeef1ffd-b4ad-4479-8a2e-46cfc1594089/02b233a0-2453-11ea-9e2f-733b46d80788/file-7khtfk4ga65ln-382w.jpg)
![NEET 2017 Physics - Laws of Motion Question 25 English](https://neetcare-image.cdn.examgoal.net/7khtfk4ga65lm/eeef1ffd-b4ad-4479-8a2e-46cfc1594089/02b233a0-2453-11ea-9e2f-733b46d80788/file-7khtfk4ga65ln-382w.jpg)
2
NEET 2017
MCQ (Single Correct Answer)
+4
-1
Consider a drop of rain water having mass 1 g falling from a height of 1 km. It hits the ground with a speed of 50 m s$$-$$1. Take 'g' constant with a value 10 m s$$-$$2. The work done by the (i) gravitational force and the (ii) resistive force of air is
3
NEET 2017
MCQ (Single Correct Answer)
+4
-1
Which of the following statements are correct ?
(1) Centre of mass of a body always coincides with the centre of gravity of the body.
(2) Centre of mass of a body is the point at which the total gravitational torque on the body is zero.
(3) A couple on a body produces both translational and rotational motion in a body
(4) Mechanical advantage greater than one means that small effort can be used to lift a large load.
(1) Centre of mass of a body always coincides with the centre of gravity of the body.
(2) Centre of mass of a body is the point at which the total gravitational torque on the body is zero.
(3) A couple on a body produces both translational and rotational motion in a body
(4) Mechanical advantage greater than one means that small effort can be used to lift a large load.
4
NEET 2017
MCQ (Single Correct Answer)
+4
-1
A rope is wound around a hollow cylinder of mass 3 kg and radius 40 cm. What is the angular acceleration of the cylinder if the rope is pulled with a force of 30 N?
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