Laws of Motion (KVPY (Kishore Vaigyanik Protsahan Yojana) Stream SB-SX (Class 12 & 1st Year B.Sc.) Physics): Questions 14 - 17 of 20

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Question number: 14

» Laws of Motion » Equilibrium of Concurrent Forces

MCQ▾

Question

Figure shows a girder supporting a load of 20, 000 N. The compression force F in newton in the girder is –

A girder supporting a load

A Girder Supporting a Load

In figure a girder supporting a load of 20, 000 N. F is the compression forces.

Choices

Choice (4) Response

a.

Equation

b.

7500

c.

Equation

d.

Equation

Question number: 15

» Laws of Motion » Equilibrium of Concurrent Forces

Appeared in Year: 2014

MCQ▾

Question

Consider the system shown below.

System consist of two boxes

System Consist of Two Boxes

In figure two boxes: X of mass 8kg and Y of mass 2 kg is adjacent to each other such that box Y does not slip downward under gravity.

A horizontal force F is applied to a block X of mass 8 kg such that the block Y of mass 2 kg adjacent to it does not slip downwards under gravity. There is no friction between the horizontal plane and the base of the block X. The coefficient of friction between the surfaces of blocks X and Y is 0.5. Take acceleration due to gravity to be 10 ms–2. The minimum value of F is,

Choices

Choice (4) Response

a.

240N

b.

40N

c.

200N

d.

160N

Question number: 16

» Laws of Motion » Equilibrium of Concurrent Forces

Appeared in Year: 2013

MCQ▾

Question

A monkey is accelerating down a string whose breaking strength is one half of his weight. The minimum acceleration of the monkey should be,

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Zero

d.

g

Question number: 17

» Laws of Motion » Law of Conservation of Linear Momentum

MCQ▾

Question

A bob of mass 0.5 kg hangs from the massless string of a long simple pendulum. A bullet of mass 0.05 kg is fired vertically from below into the bob. The bullet gets embedded into the bob and the combination rises vertically through a height of 3.2 m. If g = 10 m s-2, then the velocity of the bullet is,

Choices

Choice (4) Response

a.

88 m s-1

b.

880 m s-1

c.

8800 m s-1

d.

8 m s-1

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