MCQ Based on Friction Part 2 | Newton's Laws Of Motion | CBSE, IIT JEE, NEET, CET | Physics PYQ

1. Two Blocks A and B of mass 2 kg and 3 kg respectively are connected by a rope over a frictionless pulley. Block A lies on a rough incline with an angle θ = 30° and coefficient of kinetic friction is 0.3,while block B hangs vertically. If the system is released from rest, find the accelereation of the blocks and the tension in the rope.

A) a = 3 m/s², T = 21 N
B) a = 4 m/s² T = 30 N
C) a = 1 m/s² T = 10 N
D) a = 6 m/s² T = 20 N

... Answer is A)

2. Block A of mass 2 kg is placed at an angle 45° on wedge of mass 3 kg. The wedge is placed on a frictionless surface and horizontal force F 15 N is applied to the wedge. The coefficient of static friction between the block and the wedge is 0.4 will the block slide on the wedge, and if so, what is the acceleration of the block?

A) No Block Will Not Slid so a = 0 m/s²
B) Block Will Slide with a = 2 m/s²
C) Block Will Slide with a = 1.4 m/s²
D) Block Will Slide with a = 0.7 m/s²

... Answer is d)

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3. Two blocks of Mass 4 kg and 5kg are connected by a string passing over a pulley, block of mass 4 kg rests on 30° incline with a coefficient of Kinetic friction is 0.3, while block of mass 5 kg hangs vertically off the incline, Find the acceleration of the system and tension in the string?

A) a = 2.20 m/s² and T = 39 N
B) a = 1 m/s² and T = 10 N
C) a = 1 m/s² and T = 39 N
D) a = 2.20 m/s² and T = 10 N

... Answer is A)

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Click for Part 1 MCQ Based on Friction Part 1 | Newton's Laws Of Motion | CBSE, IIT JEE, NEET, CET | Physics PYQ