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CBSE Class 11-science Answered

define a reference point?
Asked by Rohith Kumar | 16 Apr, 2015, 07:29: PM
answered-by-expert Expert Answer
A refrence point is a point in space with respect to which the position of an object in space is expressed.
It is a fixed point and does not move so that the position of an object is described by the coordinate with respect to the reference point. In three dimensional coordinate system, the point of intersection of three axes(x, y and z axis) i.e Origin is considered as the reference point. The position of an object is taken as the distance of the object from the origin. In 3-d space, the origin act as the reference point.  
Answered by Jyothi Nair | 17 Apr, 2015, 09:00: AM

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CBSE 11-science - Physics
Respected Ma'am/Sir please clarify my doubt.
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Asked by pranavsrinivas82 | 08 Jan, 2024, 11:30: PM
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CBSE 11-science - Physics
a block of mass m is pulled along a horizontal smooth surface by a rope of mass m force p applied at one end of rope force which the rope exert on block is
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CBSE 11-science - Physics
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CBSE 11-science - Physics
Two blocks of mass m=5kg and M=10 kg are connected by a string passing over a pulley B as shown. Another string connects the centre of the pulley B to the floor and passes over another pulley A as shown. An upward force F is applied at the centre of pulley A. Both the pulleys are massless. Find the acceleration of both the blocks if 1) F=100N.  2)F=500N
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Asked by sakethrockzz007 | 14 Aug, 2023, 04:30: PM
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CBSE 11-science - Physics
A block of mass m is placed on a wedge as shown. Find difference between maximum and minimum (a(max) – a(min) ) horizontal rightward acceleration of wedge for which block remains at rest with respect to wedge. (A) 10g/9 (B) g/9 (C) g (D) None of these
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Asked by sahuaryanbro1.0 | 01 Jan, 2023, 10:17: PM
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CBSE 11-science - Physics
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Asked by subhankarnanda123 | 20 Dec, 2022, 08:36: PM
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CBSE 11-science - Physics
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CBSE 11-science - Physics
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CBSE 11-science - Physics
In the arrangement shown in the figure, a heavy pulley of mass M is suspended from a spring of stiffness constant K and the mass m is suspended from a string tightly wound on the pulley. If the mass m is given a small downward displacement and released, find the time period of small oscillations (Take pulley as Disc) and string does not slips on the pulley.
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CBSE 11-science - Physics
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