1). The centre of gravity of a triangle is at the point where three
View AnswerANS: A - medians of the triangle meet

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2). The forces which meet at one point and have their lines of action in different planes are called
View AnswerANS: B - non-coplaner concurrent forces

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3). At a given instant ship A is travelling at 6 km/h due east and ship B is travelling at 8 km/h due north. The velocity of B relative to A is
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4). The equation of motion of a particle starting from rest along a straight line is x = t ^{3} - 3t ^{2} + 5. The ratio of the accelerations after 5 sec and 3 sec will be
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5). The locus of the instantaneous centre of a moving rigid body, is
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6). A projectile is thrown at an angle a to the horizontal with α velocity v . It will have the maximum centripetal acceleration
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7).
The c.g. of the shaded area of the below figure whose curve OM is a parabola from y -axis, is

View AnswerANS: B -

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8). The unit of Moment of Inertia of a body, is
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9). If a body moves in such a way that its velocity increases by equal amount in equal intervals of time, it is said to be moving with
View AnswerANS: C - a variable acceleration

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10). If the gravitational accelerational at any place is doubled, the weight of a body, will
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