## Newton-Laws-Of-Motion-Quiz-2

As per analysis for previous years, it has been observed that students preparing for NEET find Physics out of all the sections to be complex to handle and the majority of them are not able to comprehend the reason behind it. This problem arises especially because these aspirants appearing for the examination are more inclined to have a keen interest in Biology due to their medical background.

Furthermore, sections such as Physics are dominantly based on theories, laws, numerical in comparison to a section of Biology which is more of fact-based, life sciences, and includes substantial explanations. By using the table given below, you easily and directly access to the topics and respective links of MCQs. Moreover, to make learning smooth and efficient, all the questions come with their supportive solutions to make utilization of time even more productive. Students will be covered for all their studies as the topics are available from basics to even the most advanced.

Q1. A block moves down a smooth inclined plane of inclination Î¸. Its velocity on reaching the bottom is v. If it slides down a rough inclined plane of same inclination, its velocity on reaching the bottom is v/n, where n is a number greater than 1. The coefficient of friction is given by
•  Î¼= tan⁡Î¸(1-1/n2)
•  Î¼= cot⁡Î¸(1-1/n2)
•  Î¼= tan⁡Î¸ (1-1/n2)1/2
•  Î¼= cot⁡Î¸ (1-1/n2)1/2
Solution

Q2.A shell is fired from a cannon with velocity vms-1 at an angle Î¸ with the horizontal direction. At the highest point in its path it explodes into two pieces of equal mass. One of the pieces retraces its path to the cannon and the speed in m/s of the piece immediately after the explosion is
•  3v cos⁡Î¸
•  2v cos⁡Î¸
•  3/2v cos⁡Î¸
•  (√3 v cos⁡Î¸)/2
Solution

Q3.  The acceleration of the system shown in figure is

•  3.5/17.5 g
•  7.5/17.5 g
•  14.5/17.5 g
•  g/7
Solution

Q4. A man of weight mg is moving up in a rocket with acceleration 4g. the apparent weight of the man in the rocket is
•  Zero
•  4mg
•  5mg
•  mg
Solution

Q5.A car is moving with uniform velocity on a rough horizontal road. Therefore, according to Newton’s first law of motion
•  No force is being applied by its engine
•  A force is surely being applied by its engine
•  An acceleration is being produced in the car
•  The kinetic energy of the car is increasing
Solution

Q6. A motorcyclist of mass m is to negotiate a curve of radius r with a speed v. The minimum value of the coefficient of friction so that this negotiation may take place safely, is
•  v2 rg
•  v2/gr
• gr/v
•  g/(v^2 r)
Solution

Q7.A rope of mass0.1 kg is connected at the same height of two opposite walls. It is allowed to hang under its own weight. At the contact point between the rope and the wall, the rope makes an angle Î¸=10° with respect to the horizontal. The tension in the rope at its midpoint between the wall is
•  2.78 N
•  2.56 N
•  2.82 N
•  2.71 N
Solution

Q8.A lift of mass 1000 kg is moving with an acceleration of 1 m/s^2 in upward direction. Tension developed in the string, which is connected to the lift is (g=9.8 m/s2)
•  9,800 N
•  10,000 N
•  10,800 N
•  11,000 N
Solution

Q9. A 24 kg block resting on a floor has a rope tied to its top. The maximum tension, the rope can withstand without breaking is 310 N. The minimum time in which the block can be lifted a vertical distance of 4.6 m by pulling on the rope is
•  1.2 s
•  1.3 s
•  1.7 s
•  2.3 s
Solution

Q10. The mass of man when standing on lift is 60 kg. What is the weight when he is standing on lift which is moving upwards with acceleration 4.9ms-2
•  882 kg
•  600N
•  306 N
• Zero
Solution

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