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Class XI Physics System of Particles & Rotational Motion 10
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Question 1
Find out the torque of a force 
about origin; when position vector of point of application of force is 
about origin; when position vector of point of application of force is Question 2
A body rotates at 300 rotations per minute. The value (in radian) of the angle described in 1 sec is-
Question 3
Two bodies of masses m1 and m2 are separated by a distance R. The distance of the centre of mass of the bodies from the mass m1 is
Question 4
A uniform square wooden sheet of side a has its center of mass located at point O as shown in the figure on the left. A square portion of side b of this sheet is cut out to produce an L-shaped sheet as shown in the figure on the right.
The center of mass of the L-shaped sheet lies at the point P (in the diagram) when
The center of mass of the L-shaped sheet lies at the point P (in the diagram) when
Question 5
A “V” shaped rigid body has two identical uniform arms. What must be the angle between the two arms so that when the body is hung from one end the other arm is horizontal?
Question 6
A particle moving along the x-axis has acceleration f, at time t, given by f=f0
where f0 and T are constant. The particle at t = 0 has zero velocity. In the time interval between t = 0 and the instant, when f = 0, the particle velocity vx is
Question 7
Which one of the following four graphs best depict the variation with x of the moment of inertia I of a uniform triangular lamina about an axis parallel to its base at a distance x from it:
Question 8
Thin semicircular part ABC has mass m1 and diameter AOC has mass m2. Here axis passes through mid-point of diameter and the axis is perpendicular to plane ABC. Here AO = OC = R. The moment of inertia of this composite system about the axis is:
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Oct 9JEE & BITSAT
