Q. The angle of inclination of the plane at which the body begins to move down the plane, is called

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Q. Which of the following statement is incorrect?

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Q. According to lami's theorem

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Q. The amplitude is always __________ radius of the circle.

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Q. When a body falls freely under gravitational force, it possesses __________ weight.

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Q. A lead ball with a certain velocity is made to strike a wall, it falls down, but rubber ball of same mass and with same velocity strikes the same wall, it rebounds. Select the correct reason from the following:

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Q. If P is the force acting on the body, m is the mass of the body and a is the acceleration of the body, then according to Newton's second law of motion,

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Q. If the resultant of a number of forces acting on a body is zero, then the body will not be in equilibrium.

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Q. The friction experienced by a body, when at rest, is known as

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Q. The moment of inertia of a solid sphere of mass m and radius r is

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Q. The centre of gravity of a quadrant of a circle lies along its central radius (r) at a distance of

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Q. The horizontal range of a projectile (R) is given by

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Q. Which of the following are vector quantities?

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Q. The maximum mechanical advantage of a lifting machine is

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Q. A machine having an efficiency greater than 50%, is known as

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Q. The impact between two lead spheres is approximately equal to an __________ impact.

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Q. Moment of inertia of a triangular section of base (b) and height (h) about an axis passing through its vertex and parallel to the base, is __________ than that passing through its C.G. and parallel to the base.

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Q. If a body is thrown upwards, then the gravitational acceleration is taken as zero.

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Q. An ideal machine is one whose efficiency is

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Q. The energy possessed by a body, for doing work by virtue of its position, is called

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