Question
Sun April 08, 2012 By: Bhavna

# Name the device for measuring mass, weight

Mon April 09, 2012
(Spring) Balances and scales are weight-measuring instruments.

We measure mass directly; there is a "massometer." But we do have scales, which measure weight,
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Mon July 17, 2017

# This is the answer of question 15 in selina physics class 10 solutions which you have given. What is the reason of force being applied in this direction only? To lift up the wheel on the platform, Point X will become the point of rotation of the wheel. Why can't the force be applied at the diameter of the wheel so that the perpendicular distance of the line of action of force from the axis of rotation is maximum? This is one of the factors affecting torque. Torque is directly proportional to the perpendicular distance of the line of action of force from the axis of rotation. Therefore, by applying the force at the diameter, the perpendicular distance increases and due to this, the moment of force also increases. therefore, by applying minimum effort, the wheel can be raised.

Tue July 11, 2017

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