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Centre of Gravity

The point at ...

Question

The point at which the entire weight of a body is assumed to be concentrated is known as ___.

A

centre of torque

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B

centre of mass

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C

centre of velocity

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D

centre of gravity

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Solution

The correct option is B
centre of mass

Centre of mass is the point in the body at which the entire weight of a body is considered to be concentrated.

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Similar questions

Q. (a) Centre of gravity (CG) of a body is the point at which the weight of the body acts
(b) centre of mass coincides with the centre of gravity if the earth is assumed to have infinitely large radius
(c) To evaluate the gravitational field intensity due to any body at an external point, the entire mass of the body can be considered to be concentrated at its CG
(d) The radius of gyration of any body rotating about an axis is the length of the perpendicular dropped from the CG of the body to the axis
Which one of the following pairs of statements is correct?

Q. Centre of gravity is the point at which all the weight of the body can be assumed to act.

Q. Which of the following statements are correct?
a) Centre of mass of a body always coincides with the centre of gravity of the body.
b) Centre of mass of a body is the point at which the total gravitational torque on the body is zero.
c) A couple on a body produce both translational and rotation motion in a body.
d) Mechanical advantage greater than one means that small effort can be used to lift a large load.

Q. Which of the following statements are correct?

1.

Centre of mass of a body always coincides wiith the centre of gravity of the body.

2.

Centre of gravity of a body is the point where total gravitational torque on the body is zero.

3.

A couple on a body produces both translational and rotational motion in a body.

4.

Mechanical advantage greater than one means that a small effort can be used to lift a large load.

Q. Assertion :The centre of mass of a body may lie where there is no mass Reason: Centre of mass of a body is a point, where the whole mass of the body is supposed to be concentrated

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