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 Ladder All of the above Motor ramps

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

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

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

	5)	Which of the following statements is incorrect?
		The relation between downward force and angle of inclination is W = mg sinθ. The value of normal reaction is mg cosθ. The component of weight mg sinθ and normal reaction are opposite in direction. 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 ?
		Parabola Curve No fixed shape Straight line

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

	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’ = w w’ = 0.5w w’ = w/4

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

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

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