Advertisements
Advertisements
Question
The figure shows two forces each of magnitude 10 N acting at the point A and B at a separation of 50 cm, in opposite directions. Calculate the resultant moment of two forces about the point.
- A,
- B and
- O situated exactly at the middle of the two forces.
Advertisements
Solution
Moments of force = Force × distance
F = 10 N at A and B
distance between them = 50 cm
= `50/100`
= 0.5 m
i. Moment of force at A = 10 × 0.5
= 5 N m (clockwise)
ii. Moment of force at B = 10 × 0.5
= 5 N m (clockwise)
iii. Moment of force at O = 2.5 + 2.5
= 5 N m (clockwise)
APPEARS IN
RELATED QUESTIONS
State two effects of a force when applied on a body.
On what factors does the effect of thrust on a surface depend?
Name and define the S.I. and C.G.S. units of force. How are they related?
A car of mass 600 kg is moving with a speed of 10 m-1 while a scooter of mass 80 kg is moving with speed of 50 m s-1. which vehicle will require more force to stop it in the (1) same interval of time (2) same distance
The moment of a force about axis depends ______.
A uniform metre rule of weight 10gf is pivoted at its 0 mark.
What moment of force depresses the rule?
Classify the following amongst contact and non-contact forces.
gravitation force
Give an example of the following uses of a machine:
to change the direction of force
A meter scale is provided at 10 cm mark and is balanced by suspending 400 g from 0 cm mark (fig.). Calculate the mass of meter scale.
Under what condition will a set of gears produce a gain in torque.
