Embibe Experts Solutions for Exercise 1: ICSE-2019

Why is the motion of a body moving with a constant speed around a circular path said to be accelerated?

  Define couple. State the SI unit of moment of couple. 

A uniform metre scale is in equilibrium as shown in the diagram :

Calculate the weight of the metre scale.
Which of the following options is correct to keep the ruler in equilibrium when $40 \mathrm{gf}$ weight is shifted to $0 \mathrm{cm}$ mark?
$F$ is shifted towards $0 \mathrm{cm}$ or $F$ is shifted towards $100 \mathrm{cm}$.

With reference to the direction of action, how does a centripetal force differ from a centrifugal force during uniform circular motion?

Is centrifugal force the force of reaction of centripetal force?

 Compare the magnitudes of centripetal and centrifugal force.

Define moment of a force.

Write the relationship between the SI and CGS unit of moment of force.