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ICSE Class 10 Physics Question 3 of 20

Force — Question 5

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Question

Question 5

A wheel of diameter 2 m is shown in figure with axle at O. A force F = 2 N is applied at B in the direction shown in figure.

A wheel of diameter 2m is shown in figure with axle at O. A force F = 2N is applied at B in the direction shown in figure. Calculate the moment of force about the centre O, and the point A. Force, Concise Physics Class 10 Solutions.

Calculate the moment of force about

(i) the centre O, and

(ii) the point A.

Answer

We know from the question,

F = 2 N
Diameter = 2m
So, Radius or OB = 1m

(i) Moment of force at O = F x r

Substituting the values of F and r we get,

2×1=2Nm2 \times 1 = 2Nm (ii) Moment of force at A = F x r

Substituting the values of F and r we get,

2×2=4Nm2 \times 2 = 4Nm