Inclined Plane (Viva Voce) : Class 11 : Physics : Amrita Online Lab

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Inclined Plane

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	1)	Which of the following is an example of inclined plane?
		Roller coasters All of the above Ladder Motor ramps

	2)	Why roller is used in the inclined plane experiment?
		To increase the frictional force. To reduce the force due to friction. To provide enough weight. None of these.

	3)	What is the weight of the body of mass m moving through an inclined plane placed at an angle θ?
		W= - mg sinθ W= mg W= mg sinθ W= mg cosθ

	4)	In which direction does the normal force of a body placed on a surface always act?
		Parallel to the surface Opposite to gravity Perpendicular to the surface Anti parallel to the surface

	5)	Which of the following statements is incorrect?
		The value of normal reaction is mg cosθ. The component of weight mg sinθ and normal reaction are opposite in direction. The relation between downward force and angle of inclination is W = mg sinθ. There is no movement for a body moving on an inclined plane, in the direction of normal reaction

	6)	What is the shape of the graph between W and sinθ ?
		Curve No fixed shape Parabola Straight line

	7)	What is meant by the angle of inclination?
		Angle between the object and the inclined plane Angle between the object and the horizontal surface Angle made by the inclined plane with the horizontal. None of these

	8)	The force required to move an object of mass m on an inclined plane is w. If the mass of the body is doubled, what will be the force (w’) required to pull the object on the same plane?(neglect force due to friction)
		w’ = 2w w’ = 0.5w w’ = w/4 w’ = w

	9)	What is the significance of the slope of the graph between W and sinθ?
		It gives the mass of the roller It gives the weight of the roller It gives the angle of inclination It gives the normal reaction.

	10)	Calculate the force required to move a body of mass 1 kg placed on a frictionless 10 degree inclined plane?
		1.7 N 17 N None of these 0.17 N

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