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
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).
Question number: 907 (1 of 3 Based on Passage) Show Passage
» Kinematics » Average Speed and Instantaneous Velocity
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).
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
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).
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 
