Question

whose
Identify the pair of physical quantities
dimension are equal.
work and energy
(ii) Distance and
displacement
speed and velocity (iu) all of the above​

Answer 1

Answer:

I) work and energy.................states that an increase in the kinetic energy of a rigid body is caused by an equal amount of positive work done on the body by the resultant force acting on that body.

ii)

Answer 2

Answer:

we know, force = mass × acceleration

energy = Workdone = force × displacement

power = energy/time

torque = force × perpendicular distance between force and axis of rotation.

now, by these formula, find dimension of all terms.

e.g., dimension of force =[MLT⁻²]

dimension of energy =[ML²T⁻²]

dimension of power =[ML²T⁻³]

dimension of torque =[ML²T⁻²]

Here it is clear that , dimension of energy and dimension of torque are equal.

Hence,

option (b) is correct.

Explanation:

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