Laws of Motion (KVPY (Kishore Vaigyanik Protsahan Yojana) Stream SB-SX (Class 12 & 1st Year B.Sc.) Physics): Questions 12 - 15 of 20

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 268 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 200.00 or

How to register?

Question number: 12

» Laws of Motion » Static and Kinetic Friction

Appeared in Year: 2015

MCQ▾

Question

A small box resting on one edge of the table is struck in such a way that it slides off the other edge, 1 m away, after 2 seconds. The coefficient of kinetic friction between the box and the table –

Choices

Choice (4) Response

a.

Must be exactly 0.05

b.

Must be exactly zero

c.

Must be less than 0.05

d.

Must be more than 0.05

Question number: 13

» Laws of Motion » Centripetal Force

MCQ▾

Question

A gramophone disc makes 75 rpm. A coin of mass 60 gm is placed at a distance of 20 cm from the center. What is the centrifugal force acting on the coin?

Choices

Choice (4) Response

a.

b.

c.

d.

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 –

Choices

Choice (4) Response

a.

b.

7500

c.

d.

Question number: 15

» Laws of Motion » Equilibrium of Concurrent Forces

Appeared in Year: 2014

MCQ▾

Question

Consider the system shown below.

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