Laws of Motion (KVPY Stream SB-SX (Class 12 & 1st Year B.Sc.) Physics): Questions 4 - 6 of 20

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Question number: 4

» Laws of Motion » Laws of Friction

Appeared in Year: 2013

MCQ▾

Question

A plank is resisting on a horizontal ground in the northern hemispherical of the Earth at a 450 latitude. Let the angular speed of the Earth be ω and its radius re. The magnitude of the frictional force on the plank will be,

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 5

» Laws of Motion » Equilibrium of Concurrent Forces

Appeared in Year: 2012

MCQ▾

Question

Two blocks (1 and 2) of equal mass m are connected by an ideal string (see figure below) over a frictionless pulley. The blocks are attached to the ground by springs having spring constants k1 and k2 such that k1 > k2.

Two blocks of equal mass attached with pulley

Two Blocks of Equal Mass Attached With Pulley

In figure two blocks (1 and 2) of equal mass m are connected by an ideal string over a frictionless pulley.

Initially, both springs are unstretched. The block 1 is slowly pulled down a distance x and released. Just after the release the possible value of the magnitudes of the acceleration of the blocks a1 and a2 can be –

Choices

Choice (4) Response

a.

Either Equation or Equation

b.

Either Equation or Equation

c.

Equation

d.

Equation

Question number: 6

» Laws of Motion » Impulse

Appeared in Year: 2014

MCQ▾

Question

A uniform thin rod of length 2L and mass m lies on a horizontal table. A horizontal impulse J is given to the rod at one end. There is no friction. The total K. E. of the rod just after the impulse will be:

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

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