CUET Level II - NEET Mock Test - 5 [Physics]

A mass M of 100 kg is suspended with the use of strings A, B and C as shown in the figure, where W is the vertical wall and R is a rigid horizontal rod. The tension in the string B is:

• 100 g N

• Zero

• 100 √2 g N

• 100 / √2 g N

If acceleration of 2 kg block at an instant is 2 m/s² find the acceleration of the 1 kg block at same instant:

• 1 m/s²

• 2 m/s²

• 3 m/s²

• 0.5 m/s²

In the given figure by what acceleration the boy must go up so that 100 kg block remains stationary on the wedge. The wedge is fixed and friction is absent everywhere: ( g = 10 m / s² )

• 2 m / s²

• 4m / s²

• 6m / s²

• 8m / s²

Find out the friction force acting between the 4 kg and 2 kg block in the given diagram.

• 2 N

• 8 N

• 6 N

• 4 N

A ball is released from the top of a tower. The ratio of work done by force of gravity in first, second and third second of the motion of the ball is:

• 1:2:3

• 1:4:9

• 1:3:5

• 1:5:3

If a particle of mass m is projected at an angle a with the horizontal, then:

•  the angular momentum of the particle about point of projection remains constant.

•  the linear momentum of particle remains constant

• total mechanical energy remains constant in the absence of air resistance

•  All the above

On the rotating disc A of mass M, another disc of same dimension but of mass M/4 is placed gently with same axis. New angular velocity of system:

• 5/3 ω

• 2/3 ω

• 4/5 ω

• 3/2 ω

In the figure shown the block is at rest. The acceleration with which the boy should climb along the rope so as to lift the block from the floor is:

•  [M/m -1]* g

•  [M/m + 1]* g

• M/m * g

• m/M * g

A horizontal force F is applied to a frictionless pulley of mass m₂ The horizontal surface is smooth. Acceleration of the block of mass (m₁) :

• F/m₂ + 4m₁

• 2F/m₂ + 4m₁

• F/4m₂ + m₁

• 2F/4m₂ + m₁

A block is kept on a frictionless inclined surface with angle of inclination θ. Value of applied force F for which the block remains at rest with respect to incline:

• [M + m]g/tan θ

• [M + m]g/cos θ

• [M + m]g tan θ

• M g tan θ