Work, Energy and Power-Conservation of Mechanical Energy (KVPY Stream-SA (Class 11) Physics): Questions 1 - 3 of 3

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Question number: 1

» Work, Energy and Power » Conservation of Mechanical Energy

MCQ▾

Question

A small metal ball is pushed from a height h along smooth hemispherical glass cup. If the height of the cup is R, the speed required to push it such that it just reaches the top of the opposite end of the cup is,

Choices

Choice (4) Response
a.

2gh

b.

2gR

c.

2g(Rh)

d.

2g(R+h)

Question number: 2

» Work, Energy and Power » Conservation of Mechanical Energy

MCQ▾

Question

The energy required to accelerate a car from rest to 12 ms-1 is E. What energy will be required to accelerate the car from 12 ms-1 to 24 ms-1?

Choices

Choice (4) Response
a.

E

b.

7E

c.

5E

d.

3E

Question number: 3

» Work, Energy and Power » Conservation of Mechanical Energy

MCQ▾

Question

A particle is executing linear simple harmonic motion of amplitude A. At what displacement is the energy half kinetic and half potential.

Choices

Choice (4) Response
a.

A4

b.

A2

c.

A2

d. 2A

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