Physics · JEE

Equilibrium of rigid bodies, rigid body rotation and equations of rotational motion, comparison of linear and rotational motions Mock Test for JEE

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Syllabus context

Part of Rotational Motion in JEE Main Physics.

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Q1PhysicsUnit 5: Rotational Motion

The moment of inertia of a flywheel is

0.2 k g m^{2}

which is initially stationary. constant external torque

5 N m

acts on the wheel. The work done by this torque during 10 sec is:

Q2PhysicsUnit 5: Rotational Motion

The vertical forces that the ground exerts on a stationary van are shown. The van is

2.50 \mathrm{m}

long with the wheels at a distance of

0.600 \mathrm{m}

from the front of the van and

0.400 \mathrm{m}

from the rear of the van. What is the horizontal distance of the van's centre of gravity from the front of the van?

Q3PhysicsUnit 5: Rotational Motion

Assertion (A) : A wheel may be rotated with uniform angular velocity even though the tangential forces are applied on it. Reason (R) : Angular acceleration of wheel is zero when tangential force and frictional force produce torques equal in magnitude and opposite in direction

Q4PhysicsUnit 5: Rotational Motion

A solid sphere rolls without slipping on a rough horizontal floor, moving with a speed

\boldsymbol{v} .

It makes an elastic collision with a smooth vertical wall. After impact, This question has multiple correct options

Q5PhysicsUnit 5: Rotational Motion

In a physical balance working on the principle of moments, when

5 \mathrm{mg}

weight is placed on the left plan, the beam becomes horizontal. Both the empty pans of the balance are of equal mass. Which of the following statements is correct?

Q6PhysicsUnit 5: Rotational Motion

Three similar spheres of mass

\mathrm{m}

and radius r are moving down along three inclined planes

A, B

and

C

of similar dimensions. Sphere on inclined plane

A

rolls down in pure rolling, on B it partially rolls and partially slides down the plane whereas on plane

\mathrm{C}

it slides down without rolling, then at the bottom of planes

Q7PhysicsUnit 5: Rotational Motion

A and B are two solid spheres of equal masses. A rolls down an inclined plane without slipping from a height

\boldsymbol{H} .

B falls vertically from the same height. Then on reaching the ground. This question has multiple correct options

Q8PhysicsUnit 5: Rotational Motion

When a body starts to roll on an inclined plane, its potential energy is converted into

Q9PhysicsUnit 5: Rotational Motion

If in a system of forces acting on a rigid body

\mathrm{R} . \mathrm{G} \neq 0,

then the given system of forces is equivalent to

Q10PhysicsUnit 5: Rotational Motion

A uniform rod of length

l=1 m

is kept as shown in the figure.

\boldsymbol{H}

is a horizontal smooth surface and

W

is a vertical smooth well. The rod is release from this position. What is the angular angular acceleration of the rod just after the released?

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