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IIT Entrance Exam IIT Entrance Exam 1. If the driver is firmly held in non stretching seat belt harness. (a) 52500 N

(b) 26250 N

(c) 13125 N

(d) can’t be said

2. If the driver is not wearing a seatbelt and stopping distance is determined by nature of collision with windshield, stearing column etc. (a) 262500 N

(b) 131250 N

(c) 65625 N

(d) can’t be said

3. If the driver is wearing a stretching seat belt harness (which increases the stopping distance by 50 %) (a) 35000 N

(b) 17500 N

(c) 8750 N

(d) can’t be said

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4. The magnitude of normal reaction from ground is (a) equal to 2Mg

(b) less than 2Mg

(c) more than 2Mg

(d) can’t determine

5. The correct relation between acm and α will be (a) acm = √5/4 Rα

(b) acm = 1/2 Rα

(c) acm = Rα

(d) None of these

6. If the ground is rough (instead of smooth), then the direction of friction force will be (a) forward

(b) backwards

(c) depend upon the value of µ

(d) none of these

7. In a rectilinear motion of a particle along x-axis velocity varies as v x where is a positive constant. At t = 0, particle is located at origin. Statement-1: The mean velocity of the particle averaged over the time that the particle takes to cover the first S meters of the path is. Statement-2: In a uniformly accelerated motion, the average velocity in a given duration is the arithmetic mean of the velocities at the initial and final points of the given duration. (a) A

(b) B

(c) C

(d) D

8. Statement-1: The principle of conservation of mechanical energy fails if there are nonconservative forces doing work on the system. Statement-2: Non-conservative forces, if work, result in change in mechanical energy (a) A

(b) B

(c) C

(d) D

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IIT Entrance Exam  

1. If the driver is firmly held in non stretching seat belt harness. (a) 52500 N (b) 26250 N (c) 13125 N (d) can’t be said 2. If the driver...

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