NEET (National Eligibility cum Medical Entrance Test) Physics: Questions 906 - 908 of 2142

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Question number: 906

» Work, Energy and Power » Work Done

MCQ▾

Question

A force F = (9 - 4x + 6x 2) N is applied on a 2 kg mass which displaces it from x = 0 to x = 5 m. Work done in joule is -

Choices

Choice (4) Response

a.

245

b.

135

c.

70

d.

270

Passage

Read the passage given below and answer the questions that follow:

A small particle of mass m/10 is moving horizontally at a height of 3R/2 from ground with velocity 10 m/s. A perfectly inelastic collision occurs at point P of sphere of mass m placed on smooth horizontal surface. The radius of sphere is R, (m = 10 kg and R = 0.1 m) (Assume all surfaces to be smooth).

Sphere of radius R – In perfect inelastic collision

Sphere of Radius R – in Perfect Inelastic Collision

In above figure we show that sphere of radius R and collision of the particle at point p of sphere of mass m placed on smooth horizontal surface.

Question number: 907 (1 of 3 Based on Passage) Show Passage

» Kinematics » Average Speed and Instantaneous Velocity

MCQ▾

Question

A small particle of mass m/10 is moving horizontally at a height of 3R/2 from ground with velocity 10 m/s. A perfectly inelastic collision occurs at point P of sphere of mass m placed on smooth horizontal surface. The radius of sphere is R, (m = 10 kg and R = 0.1 m) (Assume all surfaces to be smooth).

Sphere of radius R – explained in this diagram

Sphere of Radius R – Explained in This Diagram

In above figure we show that sphere of radius R and collision of the particle at point p of sphere of mass m placed on smooth horizontal su

Speed of sphere just after collision is

Choices

Choice (4) Response

a.

35/43 m/s

b.

30/43 m/s

c.

27/43 m/s

d.

40/43 m/s

Question number: 908 (2 of 3 Based on Passage) Show Passage

» Kinematics » Average Speed and Instantaneous Velocity

MCQ▾

Question

A small particle of mass m/10 is moving horizontally at a height of 3R/2 from ground with velocity 10 m/s. A perfectly inelastic collision occurs at point P of sphere of mass m placed on smooth horizontal surface. The radius of sphere is R, (m = 10 kg and R = 0.1 m) (Assume all surfaces to be smooth).

Sphere of radius R – Having inelastic collision

Sphere of Radius R – Having Inelastic Collision

In above figure we show that sphere of radius R and collision of the particle at point p of sphere of mass m placed on smooth horizontal surface.

Angular speed of sphere just after collision is

Choices

Choice (4) Response

a.

2.5 rad/sec

b.

3 rad/sec

c.

Zero

d.

2 rad/sec

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