Give the magnitude and direction of the net force acting on a kite skilfully held stationary in the sky,
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Write an expression for the work done when a force is acting on an object in the direction of its displacement.
When a force F displaces a body through a distance S in the direction of the applied force, then the work done W on the body is given by the...
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Suppose your writing desk is tilted a little. A book kept on it starts sliding down. Show the direction of frictional force acting on it.
Frictional force is acting opposite to the movement of the book i.e. upwards
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Can you think of creating a shape that would give a circular shadow if held in one way and a rectangular shadow if held in another way?
A cylinder object can cast shadows in two ways. When the top circular view faces the shining object, a circular shape shadow is formed. When its curved side faces the...
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Give the magnitude and direction of the net force acting on a cork of mass 10 g floating on water,
Zero net force The weight of the cork is acting downward. It is balanced by the buoyant force exerted by the water in the upward direction. Hence, no net force is acting...
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Give the magnitude and direction of the net force acting on a high-speed electron in space far from all material objects,
Zero net force The high-speed electron is free from the influence of all fields. Hence, no net force is acting on the electron.
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Give the magnitude and direction of the net force acting on a stone of mass 0.1 kg,
(a) 1 N; vertically downward Mass of the stone, m = 0.1 kg Acceleration of the stone, a = g = 10 m/s2 As per Newton’s second law of motion, the net force...
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A vector has both magnitude and direction. Does it mean that anything that has magnitude and direction is necessarily a vector?
No; No A physical quantity having both magnitude and direction need not be considered a vector. For example, despite having magnitude and direction, current is a scalar quantity. The essential requirement...
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What is the direction of the force acting on a charge particle q, moving with a velocity vector v in a uniform magnetic field vector B?
Force, vector Fm = q vector v x vector B Obviously, the force on charged particle is perpendicular to both velocity vector v and magnetic field vector B?
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On another planet, the local terminology for earth, water, light, air and sky are 'sky', 'light', 'air', 'water' and 'earth' respectively.
(d) earth → sky water → light light → air air → water sky → earth If someone is thirsty, then he would drink water. Now, water on that planet means light, so he would drink light.
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Vector quantities are those which have : (A) Only direction (B) Only Magnitude (C) Magnitude and direction both (D) None of these
(C) Magnitude and direction both
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