From the given figure, calculate moment of force about (i) $P$ , and (ii) $Q$ .

Important Questions on Turning Forces

MEDIUM

10th ICSE

IMPORTANT

Self Study in Physics>Chapter 1 - Turning Forces>TEST YOURSELF>Q 24

The iron gate of a building is

3 m

broad. It can be opened by applying

100 N

force at the middle of the gate. Calculate the least force required to open this gate. Where should the force be applied?

MEDIUM

10th ICSE

IMPORTANT

Self Study in Physics>Chapter 1 - Turning Forces>TEST YOURSELF>Q 25

In the given diagram wheel shown has a fixed axle passing through $O$ . The wheel is kept stationary under the action of two force $F_{1}$ and $F_{2}$ such that (i) a horizontal force $F_{1}$ at $P$ (ii) a vertical force $F_{2}$ at $Q$ . Show the direction of $F_{2}$ in the diagram. Which is the greater force? Find the ratio between the forces.
(Given : $P O = 2.5 cm$ , $Q O' = 1.5 cm$ and $∴ Resultant moment = moment due to A + moment due to B Resultant moment = 0 + 5 Resultant moment = 5 N m (Clockwise direction)$ )

Question Image

MEDIUM

10th ICSE

IMPORTANT

Self Study in Physics>Chapter 1 - Turning Forces>TEST YOURSELF>Q 26

A square cardboard is suspended by passing a pin through a narrow hole at its one corner. Draw a diagram to show its rest position. In the diagram, mark the point of suspension by letter