NEET 2021 | Rotational Motion Question 12 | Physics

NEET 2021

MCQ (Single Correct Answer)

-1

A uniform rod of length 200 cm and mass 500 g is balanced on a wedge placed at 40 cm mark. A mass of 2 kg is suspended from the rod at 20 cm and another unknown mass 'm' is suspended from the rod at 160 cm mark as shown in the figure. Find the value of 'm' such that the rod is in equilibrium. (g = 10 m/s²)

NEET 2021 Physics - Rotational Motion Question 12 English

NEET 2021 Physics - Rotational Motion Question 12 English

$${1 \over {12}}$$kg

$${1 \over {2}}$$kg

$${1 \over {3}}$$kg

$${1 \over {6}}$$kg

NEET 2020 Phase 1

MCQ (Single Correct Answer)

-1

Find the torque about the origin when a force of 3 $$\hat j$$ N acts on a particle whose position vector is 2 $$\hat k$$ m.

6 $$\hat j$$ N m

$$ - $$ 6 $$\hat i$$ N m

6 $$\hat k$$ N m

6 $$\hat i$$ N m

NEET 2019

MCQ (Single Correct Answer)

-1

A solid cylinder of mass 2 kg and radius 4 cm is rotating about its axis at the rate of 3 rpm. The torque required to stop after 2$$\pi $$ revolutions is :

2 × 10^–3 N m

2 × 10^–6 N m

2 × 10⁶ N m

12 × 10^–4 N m

NEET 2019

MCQ (Single Correct Answer)

-1

Two particles A and B are moving in uniform circular motion in concentric circles of radii r_A and r_B with speed v_A and v_B respecitively. Their time period of rotation is the same. The ratio of angular speed of A to that of B will be :

v_A : v_B

1 : 1

r_B : r_A

r_A : r_B

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Human Health and Diseases Body Fluids and Its Circulation Locomotion and Movement Neural Control and Coordination Reproduction in Organisms Reproductive Health Structural Organisation in Animals Digestion and Absorption Excretory Products and Their Elimination Chemical Coordination and Integration Human Reproduction Animal Kingdom Breathing and Exchange of Gases Evolution