In the shown system, each of the block is at rest. The value of θ is:
        
1. tan-11

2. tan-134

3. tan-143

4. tan-135

Subtopic:  Tension & Normal Reaction |
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A block of mass 1 kg lying on the floor is subjected to a horizontal force given by F=2sinωt newtons. The coefficient of friction
between the block and the floor is 0.25. The acceleration of the block will be:

1. positive and uniform
2. positive and non–uniform
3. zero
4. depending on the value of ω

Subtopic:  Friction |
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A body of mass 5 kg is suspended by the strings making angles 60°and 30°with the horizontal

a. T1=25 N                    
b. T2=25 N
c. T1=253 N               
d. T2=253 N
Choose the correct option:
1. a,b
2. a,d
3. c,d
4. b,c

Subtopic:  Tension & Normal Reaction |
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A 5 m long uniformly thick string rests on a horizontal frictionless surface. It is pulled by a horizontal force of 5 N from one end. The tension in the string at 1m from the end where the force is applied is:

1. Zero 

2. 5 N

3. 4 N 

4. 1 N

Subtopic:  Application of Laws |
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The banking angle for a curved road of radius 490 m for a vehicle moving at 35 ms-1 is:

1. tan-1(0.25)

2. tan-1(0.55)

3. tan-1(0.45)

4. tan-1(0.75)

Subtopic:  Banking of Roads |
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A man of mass m stands on a crate of mass M. He pulls on a light rope, passing over a smooth light pulley. The other end of the rope is attached to the crate. For the system to be in equilibrium, the force exerted by the man on the rope will be:
    
1. mg

2. Mg

3. 12M+mg

4. (m+M)g

Subtopic:  Tension & Normal Reaction |
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At a wall, N bullets, each of mass m, are fired with a velocity v at the rate of n bullets/sec upon the wall. The bullets are stopped by the wall. The reaction offered by the wall to the bullets is:

1. Nmvn

2. nNmv

3. nNvm

4. nmv

Subtopic:  Newton's Laws |
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A block of mass 10 kg is in contact with the inner wall of a hollow cylindrical drum of radius 1 m. The coefficient of friction between the block and the inner wall of the cylinder is 0.1. The minimum angular velocity needed for the cylinder, which is vertical and rotating about its axis, will be:
(g=10 m/s2)

1. 10 π rad/s

2. 10 π rad/s

3. 102π  rad/s

4. 10  rad/s

Subtopic:  Uniform Circular Motion |
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A tube of length L is filled completely with an incompressible liquid of mass M and closed at both ends. The tube is then rotated in a horizontal plane about one of its ends with a uniform angular velocity ω. The force exerted by the liquid at the other end is:

1. MLω22

2. ML2ω2

3. MLω2

4. ML2ω22

Subtopic:  Uniform Circular Motion |
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A body of mass m is kept on a rough horizontal surface (coefficient of friction= μ). A horizontal force is applied to the body, but it does not move. The resultant of normal reaction and the frictional force acting on the object is given by F, where:

1. |F|=mg+μmg

2. |F|=μmg

3. |F|mg1+μ2

4. |F|=mg

Subtopic:  Friction |
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